Hole Saw 5 1/2” (140mm) for Wood, HSS Bi-Metal Hole Cutter with Pilot Drill Bit for Plywood, Cornhole, Ceiling and Drywall

Very aggressive cutting. Use of the drill torque handle is recommended. Great for cutting holes in drywall for ceiling receptacles. The only thing I noticed after a week's use was, it's labeled as 3 1/8 and not the 4 1/8 size. The supplied mandrel is fine for drywall, but if you are going to drill wood, I would recommend using a larger mandrel that has the drive lugs.

As the photos show, it did a perfect job cutting a 6 1/2" hole in my new cielling of 1" thick tongue & groove pine boards for new low-profile/flat LED recessed light fixtures.I cannot say anything meaningful about longevity of the hole saw, like many here in the reviews, I just have this small project of the cielling with 5 lights to do. After that, it's going to get put away for future need thar may never come. Or get lent out to a relative someday.However, 1" thick pine is a tougher challenge than the drywall the majority of people will likely use it on, and it did the job well.And checking around, the least expensive alternative in a local retail big-box home improvement store was $7 more. And it was the flat carbide "bumps" type that's better on drywall or tile, and difficult to use on wood.And it's no different as it is made in China too.My only significant advice is that big & wide hole saws, no matter the brand, put a huge amount of torque on the drill. And if they catch, stick, or kick in what you're cutting, they can twist the drill very SUDDENLY and very HARD.This can knock you off a ladder. Or posibly twist the drill so the battery box slugs you right in the jaw, as hard as a decent boxer's punch.If you haven't used one before, it's really worth 10 minutes of time to practice on a piece of scrap board similar to what you plan on cutting the hole into.It's important to get a feel for how the saw behaves on the drill's "Fast - Drill" and "Slow Hi-Torque" settings behave. Plus, it's good to have an understanding of how important it is to keep the saw level and square to the surface you're cutting. Because angling it unintentionally is what will make the teeth on one side dig in, stop the drill, rip it out of your hand, and make it slug you in the face.And, if your drill has a side handle for an extra 90° hold, use it.

Quality for price exceeded expectations. It’s perfect for cutting holes for recessed LED lights.

We needed to drill a few 4" holes for a new radon abatement system and for 3" toilet drain lines. This blade worked flawlessly cutting through the wood and siding with ease. The blade is thick and sturdy enough that it doesn't flex like some cheap alternatives. It was easy to use and swap out between drills and clean out slots are big enough that any plugs left inside the hole saw are easily removed.I took away one star because when this was used to cut two pieces of 1/4" cement board the blade dulled quickly and barely made it through the second piece. It still cuts sheetrock well but now takes more effort with more binding when cutting joists.

Size was accurate, not sure how this will hold up on harder materials. I used this for drink holders, cutting through heavy plastic and wood.The only downside is that the pilot drill is almost impossible to remove after use. It threads into the hole saw and tightens during use.

Worked as intended- we used it to go through 1/2 inch plywood for recessed lights. You really do need to have quite a bit of strength to hold it in place and push to saw through- if not this thing will go haywire

I bought the 3-1/8" size to cut holes in a few hollow doors (veneer). Initially, the product worked very well, cutting the holes efficiently and clean. After about the 4th hole, the teeth were not cutting, and I could just smell burning wood and some smoke. I was able to manage to cut 2 more holes, but that's about all this can handle. If you're only cutting a few holes in soft material, you'll probably be fine. If you're looking for something more durable, you'll probably want to check out some other products.PROS• Cost• Easy to install and useCONS• Not durable (lasts 4-6 cuts)

I needed to cut just one 3 3/4” hole, and I didn’t need a heavy duty hole saw. This saw was very impressive! No wobble when I started, and a very clean hole. When I finished, the saw went into my hole saw collection — I’ll use it again