LANIAKEA 3-1/4-Inch Bi-Metal Hole Saw 83MM M42 Annular Hole Cutter HSS Variable Tooth Pitch Holesaw Set with Arbor Blue for Home DIYer

Worked great. Smooth clean cuts through a wood ceiling. Cut 4 holes for atmos height speakers in home theater. It is a perfect 8 inches. Same exact size as the 8 hole template the speakers came with. Only negative is it did not come with mounting instructions. You tube helped as I wanted to make sure it was on correctly before using so I was confident knowing I was safe. I wanted to focus on the cut not worrying it would fly off. The saw has a threaded center and you thread on the center part that has the drill bit on it. Then there is a ring on the center part that you tighten and that pushes two small rods into position on the corresponding holes in the saw. This holds it in place. Its an intimidatingly saw. Make sure to use a drill that has a handle grip on it. This thing can injury your wrist. Just use care and be aware. Glad I picked this saw.

New speakers for boat needed a 5.13 inch hole - what? First of all that is 5 1/8 inch, second drilling in my gel-coat fiberglass is hazardous. This tool worked perfectly, clean cut with no chipping. Could not be more pleased.

Disappointed to receive a used blade. Nowhere on the description said that I would be buying someone elses return.

A bit of a chore to remove cutoff disks.

I ordered this hole saw to cut holes for speakers in my boat. It worked great.

I was concern that this low priced tool would not be high enough quality to make this cut for me. I needed to make this 6.875 hole at a very difficult angle in my boat. The hole saw performed very well, I was very happy with it.

Item arrived late and upon arrival in a bag it had a broken bit.

This unit works great. Also get different size drill bits. Arbor also fits my Craftsman hole saw.

I tried to put this in my 3/8 drill but it wouldnt fit. Fortunatly I have a 1/2 drill so I was able to cut the one hole I needed to. Im glad I didnt have to buy one so I could use this or have to return this.

It may be huge but it cuts smooth. I cut through two walls with ease. This was a weekend project and ended in success due to this great hole saw.