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

Far from high end quality, but I wasnt expecting much for $10 either. I bought it for a single project and it worked fantastic!

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.

Drilled six holes through 2” x 6” beams. Worked great!

Not recommended for cutting into ridged sheets of metal. Cuts very uneven. We probably should have used something different.

Worked for me... Still using.

Works great!

I used this to cut holes in 3/4 inch plywood. Cut nice and clean. After 40 holes still cutting like new. As good as big brand name I recommend it

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.

It will do the work 100% perfectly if you have the right drill.

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.