Seimneire 6-1/4 Inch Hole Saw with Heavy Duty Arbor, 1.2 Inch Cutting Depth HSS Bi-Metal Hole Drilling Cutter for Smoothly Cutting in Wood Cornhole Boards Plastic Drywall & Thin Metal

i use this instead of the cased airtech cutters. you have to go slow and steady and be ready to stop at a a snag or it can toss you off a stepladder, but vastly superior to the adjustable arm cutters with the dome and rubber seal. i would sooner vacuum the drywall mess up in exchange for the speed and accuracy of this cutter. even though air-techs say 9.25 hole required, they fit this things holes perfectly, super clean cuts and way better than 2 arm cutters if you have to go through multiple layers of ceilings or especially lath and plaster in old farmhouses.

Makes installing wafer lights a breeze.

Very strong and grippy and drills great depending on your drill

The locking chuck was a little loose but it worked quite well. I mean it’s a hole saw. Not brain surgery. Lol

It does the job but I see why they sent 3 drill bits with it. The first one broke on the first use. But I was able to finish the job without any others breaking.

it went thru 1/4 aluminum plate but very slowly. but it did work. probably better in wood or softer materials.

Very sturdy and sharp teeth. Very well constructed

The hole saw itself is a fine product. Its sharp, cuts cleanly when using the painters tape trick. Seems manage dust fine as it didnt leave any burn marks. I dont expect to use this blade often but I expect it to be good enough to be the last 3-1/8 hole saw I buy. However the arbor doesnt run true. There is definitely some run out that cannot be attributed to the drill. Be warned if you use the included arbor as it may lead to inaccuracy. But fortunately the hold saw has the standard threads so you can just use any other arbor and it works a treat. 4/5, ironically it would have been 5/5 if they didnt include the arbor.

I bought these to install can lights and it works perfectly and had fast shipping.

Be careful! This is a good product for making holes for flat ceiling lights with the diameter of 6 inches. Be careful when you’re using it. It could grab and if you’re on top of a ladder either you will go flying, Cut a finger off or possibly destroy your ceiling. I saw a video on YouTube and the fellow that suggested running it in reverse when you’re cutting through sheet rock. This method may work better for you. It avoids the grabbing that this blade will do and perhaps will save you a trip to the emergency room.