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

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.

Threads on saw/bit failed on first use. Junk!

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.

I am not sure if this thing is good or not because I cannot tighten the arbor with the provided allen wrench. When trying to use the hole saw came flying out and could have hurt me badly. So dangerous! If defected on one might be defected on others too.

Don’t understand the negative reviews??? It’s a cheap hole saw that does what it’s supposed to do… I’ve cut 12 perfect 4” holes for gang boxes and the last hole was as good as the first . Some were in sheet rock some were in 3/8” beadboard, all clean and perfect! And I paid less than $15.

Mandrel stripped out immediately! This is junk!

If you plan on using this once, you are fine. But it becomes immediately dull. Overseas JUNK.

Used it to cut 6 flush mount LED ceiling light holes. Cuts cleanly, heavy metal hole saw with quality arbor , extra pilot bit, and hex wrench.

Missing the arbor

This is a decent, cheap hole saw that gets the job done. I used it to cut holes in ceiling drywall to install remodel 6” recessed can lights. Unfortunately, this saw measures slightly under 6”, so the resulting holes were not large enough to fit the cans. I had to enlarge them a bit with a drywall saw, which then defeated the purpose of using a hole saw to make clean cuts and minimize dust in the first place. Also doesn’t last very long… it was adequate for what I needed without breaking the bank, but you get what you pay for.