--- product_id: 27934260 title: "4.5\" x 7/8\" Jumbo Zirconia Type 29 Flap Discs, High Density Sanding and Finishing Wheels for Angle Grinder, 40 Grit, 10 Count" brand: "benchmark abrasives" price: "1837202₫" currency: VND in_stock: true reviews_count: 8 category: "Benchmark Abrasives" url: https://www.desertcart.vn/products/27934260-4-5-x-7-8-jumbo-zirconia-type-29-flap store_origin: VN region: Vietnam --- # Premium high-density zirconia grit 7/8" arbor fits most grinders 13300 RPM max speed 4.5" x 7/8" Jumbo Zirconia Type 29 Flap Discs, High Density Sanding and Finishing Wheels for Angle Grinder, 40 Grit, 10 Count **Brand:** benchmark abrasives **Price:** 1837202₫ **Availability:** ✅ In Stock ## Summary > 💥 Grind smarter, not harder — the pro’s choice for flawless finishes! ## Quick Answers - **What is this?** 4.5" x 7/8" Jumbo Zirconia Type 29 Flap Discs, High Density Sanding and Finishing Wheels for Angle Grinder, 40 Grit, 10 Count by benchmark abrasives - **How much does it cost?** 1837202₫ with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/27934260-4-5-x-7-8-jumbo-zirconia-type-29-flap) ## Best For - benchmark abrasives enthusiasts ## Why This Product - Trusted benchmark abrasives brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Universal Compatibility:** Fits virtually all 4.5" angle grinders including Dewalt, Makita, Bosch, and more — no tool left behind. - • **Cost-Effective Longevity:** 10-pack bundle offers extended use and superior lifespan, saving you money and downtime. - • **Unmatched Durability & Speed:** Premium zirconia grains deliver aggressive stock removal with a 13,300 RPM max speed for rapid project completion. - • **Versatile Multi-Tasking Power:** From rust removal to beveling and finishing, tackle any surface blending or grinding challenge with ease. - • **Industrial-Grade Quality Assurance:** Meets and exceeds ANSI & EU standards, ensuring professional-grade performance every time. ## Overview Benchmark Abrasives 4.5" x 7/8" Premium High-Density Jumbo Zirconia Type 29 Flap Discs are industrial-grade grinding wheels designed for 4.5" angle grinders. Featuring durable European zirconia grit and a 7/8" arbor, these discs deliver aggressive stock removal, smooth surface blending, and rust removal across multiple materials. Compatible with top grinder brands and exceeding ANSI and EU standards, this 10-pack offers professionals and DIYers a versatile, long-lasting solution for finishing, grinding, and sanding tasks. ## Description Benchmark Abrasives 4.5" x 7/8" Premium High Density Jumbo Zirconia Type 29 Flap Discs 4 1/2 for Angle Grinder, Sanding Discs, Finishing - Grinding Wheels 4 1/2 Inch (10 Pack) - 40 Grit: desertcart.com: Industrial & Scientific Review: great product - I recently had the opportunity to test the Benchmark Abrasives 4.5" x 7/8" Premium High-Density Jumbo Zirconia Type 29 Flap Discs, and I am thoroughly impressed with their performance and durability. The first thing that caught my attention was the build quality. These flap discs are well-crafted with precision, and the high-density jumbo zirconia material used ensures superior strength and longevity. The 4.5" size and 7/8" arbor make them versatile and compatible with a variety of angle grinders. What sets these flap discs apart is their exceptional abrasive power. Whether I was working on metal or wood, the Benchmark Abrasives discs exhibited consistent and aggressive grinding action. The Type 29 design further enhances their versatility, allowing for smooth contouring and blending on different surfaces. Durability is a key factor for me when it comes to abrasive discs, and I am pleased to say that these flap discs exceeded my expectations. The zirconia construction not only delivers powerful abrasion but also ensures a longer lifespan compared to standard discs. This longevity translates to cost savings over time, making them a practical choice for both DIY enthusiasts and professionals. Another notable feature is the efficient heat dissipation. Even during prolonged use, the Benchmark Abrasives flap discs maintained their effectiveness without overheating. This is crucial for achieving consistent results and prolonging the life of the discs. In conclusion, the Benchmark Abrasives 4.5" x 7/8" Premium High-Density Jumbo Zirconia Type 29 Flap Discs are a top-notch choice for anyone seeking reliable and high-performance abrasive discs. Their durability, versatility, and efficient grinding action make them an excellent investment for various applications. I highly recommend these flap discs to fellow craftsmen and DIY enthusiasts looking for a superior grinding experience. Review: Great for sanding paint from old tongue and groove floor - I recently ripped out carpet from a very old tongue and groove floor — a floor that had two decades-old layers of paint. The paint was not peeling, the tongue and groove installation was not level, and for various reasons a floor sander was not a viable option. After trying 40 grit paper with both a belt sander and a random orbital, I resorted to these flap discs on an angle grinder. The difference was stark. I am getting much better results from the discs (it's not even close) and working much faster (again, it's not even close). There are however a few caveats. First, sanding wood with these is MESSY. While the sanders have a modicum of dust collection, the angle grinder does not, and these discs spit up a LOT of sawdust. At least twenty times messier than using a sander is my estimate. Second, compared to an orbital sander or even a belt sander, sanding a large surface with an angle grinder is really hard work and requires a fair amount of hand and wrist strength. Third, an angle grinder, even with a sanding disc as opposed to a cutting wheel, is a much more dangerous tool than a sander, and sanding is really only a viable option if you remove the safety guard. So you have to use good sense and have decent skills if you want to undertake this. You'll also want to protect your eyes. Fourth, sanding your floor this way can gouge it up pretty bad very quickly, especially if you're trying to remove paint from deeper pockets, which requires more angle. If you don't want a distressed look, or if you're unwilling to spend the time to sand out gouges, this is probably the wrong tool for you. But in my case, these drawbacks were well outweighed by the benefits. I am looking to dye the floor, not paint it, and I really wanted to get the paint off, including near the edges of the grooves and other spots where my belt sander and random orbital sander really struggled to get to bare wood (and only with a lot of time investment). And given the circumstances with this floor, which is patched and was not cleanly installed to begin with, I'm perfectly happy with a little bit of a distressed look. One more advantage: if you have nails or screws you can't get out or further in (or that you just plain missed), they will rip your sandpaper to shreds. With these discs, you can easily just grind them down. (Be aware though that grinding creates a lot of sparks.) How are the discs holding up? I had about 400 square feet to sand, and I estimate I'm close to 3/4 done. I probably could have swapped more frequently; nor have I attempted any method to clean out the discs of gunk (other than banging the disc on the floor a couple times), and I just put the third disc on prior to quitting for the day. If these discs were $8 or $10 each, I'd probably be dissatisfied with that, but given the price of this pack, I'm really happy with that sort of cost–longevity ratio. In my opinion, these are giving really good value. As I indicated, not everyone will want to use these on their floors. But in the right circumstances, this is a great option. ## Features - MULTIFUNCTIONAL USAGE: Benchmark Abrasives 4.5" x 7/8" T29 grinder wheel flap discs excel in various tasks including surface blending, beveling, grinding, deburring, edge chamfering, finishing, stock removal, and rust remover. Designed for both professionals and DIY enthusiasts, these “ 4 1/2 grinding wheels ensure efficient and precise results for every project. These angle grinder attachments are ready for any task at hand. - PREMIUM ZIRCONIA MATERIAL: Crafted with European zirconia cloth, these grinding wheels 4 1/2 inch flap discs offer superior performance. The uniform particle size and premium blend of ingredients in the zirconia sanding discs ensure consistent and reliable abrasion. Experience enhanced durability and cutting efficiency with every use of these grinder wheels. - INDUSTRIAL-GRADE QUALITY: Meeting rigorous industrial standards, the “ 4 1/2 flap disc is perfect for 4.5” angle grinders. This angle grinder sanding disc provides versatility, ideal for aggressive stock removal to delicate surface blending. Trust in our “ 4.5 grinding wheel for metal for professional-grade results every time. - GRINDING DISC WITH VERSATILE APPLICATIONS & COMPATIBILITY: These flapper discs 4 1/2 for angle grinder (4.5 & 5 inches) can be used in numerous industries such as automotive, transportation, mining, shipbuilding, construction, welding, & fabrication. The Benchmark Abrasives angle grinder flap disc 4 1/2 inch size fits Dewalt, Milwaukee, Makita, Bosch, Metabo, Ryobi, Black & Decker, Kobalt, Craftsman, Skil, Porter Cable, Ridgid 4.5 & 5 inch angle grinders and virtually all other brands. - UNCOMPROMISING QUALITY STANDARDS: All our grinding discs 4 1/2 for angle grinder are manufactured with top-tier materials, exceeding ANSI and EU European Standards. We are committed to high-quality flap wheels 4 1/2 inch discs, and excellence in every flap disc for angle grinders. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B01D0HA3LK | | Best Sellers Rank | #1,371 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1 in Flap Discs | | Brand Name | Benchmark Abrasives | | Compatible Devices | Angle Grinder | | Compatible Material | Stainless Steel | | Construction Type | Grinding | | Customer Reviews | 4.7 4.7 out of 5 stars (2,147) | | Grit Material Type | Zirconia | | Grit Number | 40 | | Grit Type | Coarse | | Included Components | Flap Discs | | Industry Standard Identifier | Type 29 | | Item Dimensions | 4.5 x 4.5 x 0.5 inches | | Item Dimensions L x W | 4.5"L x 4.5"W | | Item Thickness | 0.88 Inches | | Item Weight | 4 ounces | | Manufacturer | Benchmark Abrasives | | Material Type | Premium Zirconia Grains | | Maximum Rotational Speed | 13300 RPM | | UPC | 072802810699 728028210699 | | Unit Count | 1.0 Count | ## Product Details - **Brand:** Benchmark Abrasives - **Compatible Devices:** Angle Grinder - **Grit Material:** Zirconia - **Grit Type:** Coarse - **Product Dimensions:** 4.5"L x 4.5"W ## Images ![4.5" x 7/8" Jumbo Zirconia Type 29 Flap Discs, High Density Sanding and Finishing Wheels for Angle Grinder, 40 Grit, 10 Count - Image 1](https://m.media-amazon.com/images/I/71LKMXpx7gL.jpg) ## Available Options This product comes in different **Style** options. ## Questions & Answers **Q: would these work to remove paint off a concrete floor?** A: Yes, but if you have a large area to do the discs will get gunked up with paint. Might want to use paint remover and a metal scraper. **Q: Are these good for wood?** A: They are actually VERY good on wood. Much faster than most sanders. You have to have a steady hand though. **Q: can this be used for sanding a jon boat?** A: I wouldn't recommend this for sanding a Jon boat as too much pressure with a grinder could penetrate the skin of the boat. **Q: what grit on these discs would be best to remove light rust and smooth paint on body of a 10 wheel dump truck** A: I would think 80 grit would do best for the light work you’re describing. ## Customer Reviews ### ⭐⭐⭐⭐⭐ great product *by J***E on January 20, 2024* I recently had the opportunity to test the Benchmark Abrasives 4.5" x 7/8" Premium High-Density Jumbo Zirconia Type 29 Flap Discs, and I am thoroughly impressed with their performance and durability. The first thing that caught my attention was the build quality. These flap discs are well-crafted with precision, and the high-density jumbo zirconia material used ensures superior strength and longevity. The 4.5" size and 7/8" arbor make them versatile and compatible with a variety of angle grinders. What sets these flap discs apart is their exceptional abrasive power. Whether I was working on metal or wood, the Benchmark Abrasives discs exhibited consistent and aggressive grinding action. The Type 29 design further enhances their versatility, allowing for smooth contouring and blending on different surfaces. Durability is a key factor for me when it comes to abrasive discs, and I am pleased to say that these flap discs exceeded my expectations. The zirconia construction not only delivers powerful abrasion but also ensures a longer lifespan compared to standard discs. This longevity translates to cost savings over time, making them a practical choice for both DIY enthusiasts and professionals. Another notable feature is the efficient heat dissipation. Even during prolonged use, the Benchmark Abrasives flap discs maintained their effectiveness without overheating. This is crucial for achieving consistent results and prolonging the life of the discs. In conclusion, the Benchmark Abrasives 4.5" x 7/8" Premium High-Density Jumbo Zirconia Type 29 Flap Discs are a top-notch choice for anyone seeking reliable and high-performance abrasive discs. Their durability, versatility, and efficient grinding action make them an excellent investment for various applications. I highly recommend these flap discs to fellow craftsmen and DIY enthusiasts looking for a superior grinding experience. ### ⭐⭐⭐⭐⭐ Great for sanding paint from old tongue and groove floor *by T***T on December 26, 2020* I recently ripped out carpet from a very old tongue and groove floor — a floor that had two decades-old layers of paint. The paint was not peeling, the tongue and groove installation was not level, and for various reasons a floor sander was not a viable option. After trying 40 grit paper with both a belt sander and a random orbital, I resorted to these flap discs on an angle grinder. The difference was stark. I am getting much better results from the discs (it's not even close) and working much faster (again, it's not even close). There are however a few caveats. First, sanding wood with these is MESSY. While the sanders have a modicum of dust collection, the angle grinder does not, and these discs spit up a LOT of sawdust. At least twenty times messier than using a sander is my estimate. Second, compared to an orbital sander or even a belt sander, sanding a large surface with an angle grinder is really hard work and requires a fair amount of hand and wrist strength. Third, an angle grinder, even with a sanding disc as opposed to a cutting wheel, is a much more dangerous tool than a sander, and sanding is really only a viable option if you remove the safety guard. So you have to use good sense and have decent skills if you want to undertake this. You'll also want to protect your eyes. Fourth, sanding your floor this way can gouge it up pretty bad very quickly, especially if you're trying to remove paint from deeper pockets, which requires more angle. If you don't want a distressed look, or if you're unwilling to spend the time to sand out gouges, this is probably the wrong tool for you. But in my case, these drawbacks were well outweighed by the benefits. I am looking to dye the floor, not paint it, and I really wanted to get the paint off, including near the edges of the grooves and other spots where my belt sander and random orbital sander really struggled to get to bare wood (and only with a lot of time investment). And given the circumstances with this floor, which is patched and was not cleanly installed to begin with, I'm perfectly happy with a little bit of a distressed look. One more advantage: if you have nails or screws you can't get out or further in (or that you just plain missed), they will rip your sandpaper to shreds. With these discs, you can easily just grind them down. (Be aware though that grinding creates a lot of sparks.) How are the discs holding up? I had about 400 square feet to sand, and I estimate I'm close to 3/4 done. I probably could have swapped more frequently; nor have I attempted any method to clean out the discs of gunk (other than banging the disc on the floor a couple times), and I just put the third disc on prior to quitting for the day. If these discs were $8 or $10 each, I'd probably be dissatisfied with that, but given the price of this pack, I'm really happy with that sort of cost–longevity ratio. In my opinion, these are giving really good value. As I indicated, not everyone will want to use these on their floors. But in the right circumstances, this is a great option. ### ⭐⭐⭐⭐⭐ Best I have ever used. *by R***W on August 31, 2025* Every now and again I'll come across a product here on amazon that people are raving about and it will just be a bunch of hype but in this case the hype is 100% genuine. The are hands down the best flap discs I have ever used even beating discs I paid 2x the money for. When I used these to remove 9 layers of paint from some metal parts to refinish them, I could not believe my eyes on how quickly this stripped it down to bare metal. I had to put in so little effort that I didn't even drain a dinky 4Ah M18 Milwaukee battery doing all the pieces. I am extremely pleased with this product and sad that I hadn't heard of this brand before. If you are looking for something that works well, is fast, fits well and is durable look no further this it's the best you can get. ## Frequently Bought Together - Benchmark Abrasives 4.5" x 7/8" Premium High Density Jumbo Zirconia Type 29 Flap Discs 4 1/2 for Angle Grinder, Sanding Discs, Finishing - Grinding Wheels 4 1/2 Inch (10 Pack) - 40 Grit - Benchmark Abrasives Grinder Cut Off Wheels 4 1/2 Inch Aluminum Oxide Thin Type 1 Angle Grinder Cutting Disc for Metal, Stainless Steel - with 7/8" Arbor Hole, Fast Grinder Cutting Wheel - 50 Count - Benchmark Abrasives 6 Inch Aluminum Oxide Thin Type 1 Grinder Cut Off Wheels for Metal and Stainless Steel .045" Thick 7/8" Arbor, Angle Grinder Cutting Disc, Grinding Cutting Wheel - 25 Count --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.vn/products/27934260-4-5-x-7-8-jumbo-zirconia-type-29-flap](https://www.desertcart.vn/products/27934260-4-5-x-7-8-jumbo-zirconia-type-29-flap) --- *Product available on Desertcart Vietnam* *Store origin: VN* *Last updated: 2026-05-22*