JIECHENG Bi-Metal 4 inch Hole Saw with Arbor Mandrel for Cutting Wood,Cornhole Boards,Drywall,Plasterboard,Plywood,Steel,Aluminium,Brass,Copper,Zinc,Tin,102mm

Made the cornhole without any issues or splinters

Center drill is not threaded straight, it sticks out at about a 70-80 degree angle making it unusable.

I purchased this saw for my outdoor recessed lighting project and the saw would not cut through my soffit. Had to use additional saws and drills. Complete waste of money and time.

The threads on the arbor burned up on the first use. Didnt even complete 1 hole. Now it just spins on the arbor and wont come off

the bit is not sharp it took an entire day to cut 1/16 plastic about half way through then we used a hammer to try and pop the bit out because it was stuck the the bit split into two pieces

Needed to cut one hole in my soffit foot an exhaust fan. Did the job, though if I needed to cut more holes I’d buy something of better quality.

Item came with wrong arbor. The thread size of the arbor was not the same as the thread size of the hole saw.

I used it to create still air boxes out of sterlite plastic boxes. Perfect size for arm holes. If you use it as I did, make sure to keep the speed low to medium. As more friends are taking up growing mushrooms, its come in very handy.

The arbor is too small to fit.

Save your money. I had a simple project and needed just two holes. First, the saw does not screw onto the hole saw arbor straight. This causes it to wobble once you have it on your material because it will not sit flush. On the second hole while going through plywood the drill bit completely sheared off. I was also not able to make the second cut because the teeth have nearly sheared completely down.