--- product_id: 155492604 title: "Mountain 12x14mm Double Box Universal Spline Reversible Ratcheting Wrench; 90 Tooth Design, Long, Flexible, Reversible; MTNRM1214" brand: "mountain" price: "3635333₫" currency: VND in_stock: true reviews_count: 10 category: "Mountain" url: https://www.desertcart.vn/products/155492604-mountain-12x14mm-double-box-universal-spline-reversible-ratcheting-wrench-90 store_origin: VN region: Vietnam --- # Reversible double box ends 90-tooth ratchet precision Long, flexible design Mountain 12x14mm Double Box Universal Spline Reversible Ratcheting Wrench; 90 Tooth Design, Long, Flexible, Reversible; MTNRM1214 **Brand:** mountain **Price:** 3635333₫ **Availability:** ✅ In Stock ## Summary > 🔧 Master every tight spot with precision and style! ## Quick Answers - **What is this?** Mountain 12x14mm Double Box Universal Spline Reversible Ratcheting Wrench; 90 Tooth Design, Long, Flexible, Reversible; MTNRM1214 by mountain - **How much does it cost?** 3635333₫ 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/155492604-mountain-12x14mm-double-box-universal-spline-reversible-ratcheting-wrench-90) ## Best For - mountain enthusiasts ## Why This Product - Trusted mountain brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Flexible Long Reach:** Extended length with flex-head for hard-to-access bolts and maximum leverage. - • **Trusted Performance:** Highly rated by pros for reliability—outperforms expensive competitors. - • **Dual 8x10mm Box Ends:** Versatile double box design fits multiple fasteners without switching tools. - • **Durable Polished Finish:** Sleek metal polish resists corrosion and looks sharp in your toolkit. - • **Precision 90-Tooth Ratchet:** Smooth, micro-tooth engagement for effortless turning in tight spaces. ## Overview The Mountain MTNRM810 is a premium 8x10mm double box universal spline ratcheting wrench featuring a 90-tooth reversible ratchet mechanism and a flexible long handle. Crafted in Taiwan with a polished metal finish, it delivers exceptional durability and precision for professional-grade tool performance, ideal for tight automotive and mechanical applications. ## Description Mountain 8x10mm Double Box Universal Spline Reversible Ratcheting Wrench; 90 Tooth Design, Long, Flexible, Reversible; MTNRM810 - desertcart.com Review: It succeeded where many tools have failed - It worked. It worked like a charm. I was changing out a serpentine belt on my Honda. The way they have the tensioner, you have no way to get a ratchet set in there to get enough lag to put the new belt on. I tried the belt removal tool and tried flat ratcheting wrench but did not work. Regular wrench doesn't have enough angle to really get a good pull on the tensioner with out it popping off the bolt. But this one, this one has a sort of an extention to the wrench where it goes on just right on the tensioner bolt and you can remove and replace belt with ease. I spent half a day trying to use the inadequte tools to put on the serpentine belt. Ordered and bought 2 other type of tools and still ended up failing. Then comes along the Mountain wrench.... Ahhhh, it was great.......... Just the right tool for the job. Review: Very good wrenches - I have the entire set but after 12 years my 8mm gear started to skip. The rest of them are still going strong! Such a good set for the price. Highly recommend over an expensive snapon, matco, cornwell set ## Features - Country Of Origin: Taiwan, Province Of China - Model Number: MTNRM810 - Item Package Dimension: 14.05" L x 2.55" W x 2.25" H - Item Package Weight: 1.3 lb ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B018JX4MI0 | | Batteries Included? | No | | Batteries Required? | No | | Best Sellers Rank | #97,179 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #58 in Box-End Wrenches #452 in Adjustable Wrenches | | Brand | Mountain | | Color | Black, Silver | | Customer Reviews | 4.8 4.8 out of 5 stars (471) | | Date First Available | April 18, 2014 | | End Style | Ratcheting Box | | Finish | Polished | | Finish Type | Polished | | Global Trade Identification Number | 00702597989699 | | Head Style | Box End | | Included Components | adjustable wrench, handtools, wrenches | | Is Discontinued By Manufacturer | No | | Is Non Sparking | No | | Is Racheting | Yes | | Item Length | 13.3 Inches | | Item Package Quantity | 1 | | Item Weight | 2.85 ounces | | Item model number | MTNRM810 | | Manufacturer | Mountain | | Material | Metal | | Measurement Standard | Metric | | Measurement System | Metric | | Operation Mode | Mechanical | | Part Number | MTNRM810 | | Point Count | 12 | | Size | 10mm | | Style | Wrench | | UPC | 069060345865 702597989699 | | Wrench Length Style | Flex-Head | ## Product Details - **Brand:** Mountain - **Color:** Black, Silver - **Item Length:** 13.3 Inches - **Item Package Quantity:** 1 - **Material:** Metal ## Images ![Mountain 12x14mm Double Box Universal Spline Reversible Ratcheting Wrench; 90 Tooth Design, Long, Flexible, Reversible; MTNRM1214 - Image 1](https://m.media-amazon.com/images/I/51NTsN51M+L.jpg) ## Available Options This product comes in different **Size, Style** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ It succeeded where many tools have failed *by J***E on January 27, 2023* It worked. It worked like a charm. I was changing out a serpentine belt on my Honda. The way they have the tensioner, you have no way to get a ratchet set in there to get enough lag to put the new belt on. I tried the belt removal tool and tried flat ratcheting wrench but did not work. Regular wrench doesn't have enough angle to really get a good pull on the tensioner with out it popping off the bolt. But this one, this one has a sort of an extention to the wrench where it goes on just right on the tensioner bolt and you can remove and replace belt with ease. I spent half a day trying to use the inadequte tools to put on the serpentine belt. Ordered and bought 2 other type of tools and still ended up failing. Then comes along the Mountain wrench.... Ahhhh, it was great.......... Just the right tool for the job. ### ⭐⭐⭐⭐⭐ Very good wrenches *by M***I on October 2, 2024* I have the entire set but after 12 years my 8mm gear started to skip. The rest of them are still going strong! Such a good set for the price. Highly recommend over an expensive snapon, matco, cornwell set ### ⭐⭐⭐⭐⭐ My best wrench! *by N***Y on September 18, 2023* This thing is like a piece of art! Trust me, this will be your most prized wrench. You will be out in the garage late way past your bedtime looking for 10 mm bolts and nuts to try it on. Nicely polished and super fine ratchet teeth make this my favorite box end ratcheting wrench ever. It's everything you've only dreamed of. --- ## 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/155492604-mountain-12x14mm-double-box-universal-spline-reversible-ratcheting-wrench-90](https://www.desertcart.vn/products/155492604-mountain-12x14mm-double-box-universal-spline-reversible-ratcheting-wrench-90) --- *Product available on Desertcart Vietnam* *Store origin: VN* *Last updated: 2026-05-23*