Koopi 5 1/2 Inch Hole Saw with Arbor, 140mm Bi-Metal Hole Cutter for Easily Drilling in Wood, Plastic, Plywood, Thin Metal (5.5 inch Dia.)

I would be giving this 5 stars if the saw actually stayed on the drill guide but it does not! You screw the saw onto the drill guide but surprisingly the way the threads run when the drill spins the saw unscrews off this guide, if they ran the other way it would tighten on the guide working perfect. Very frustrating but beyond that I bought this for installing can lights in drywall and this went drywall and wood strapping like butter. It is sharp with no wobble but having the saw come off while using is extremely frustrating.

Great hole saw for the price, lot of people said that the saw would fly off and cut you so with that being said I bought some red locktigh and applied to it b4 use , I dont think I really needed to do so , I cut to perfect 5.5 holes in a boat for speaker installation like it was butter , didn't blister the fiberglass at all .Amazon $17.00 and 2 days or downtown 67.00 and same day hmmmm I like my money to stay with me

I needed this size holesaw for cutting out lamp base blanks in exotic hardwood. It cuts clean and the size is very good. I prefer a mandrel with pegs, but the one supplied works fine. Good holesaw for the money.

Good thick well made hole saw itnworkd well just need to hold drill well

Perfect size for the new speakers I put on my boat cut through the fiberglass like butter.

Es very nice

I'm not sure if I'm doing something wrong here, as there are no instructions provided, but this thing just falls off the drill immediately every time I try to use it. And yes I am going in a clockwise direction.

This product arrived ahead of schedule. It works great and cost half of what similar products cost at a local store.