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

Was worth the money cant comment on longevity used it once seems to be good. Should have more life in it.

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.

Not the highest quality, looked like it may be a second. But it worked good to cut the holes in 1/2 in plywood.

Bought to install ceiling recessed lights. Definitely a great value. Only used on drywall but had no problems cutting

Cant use it at all. It was shipped with the wrong arbor. The thread on the arbor is way to small for the saw. Dont waste your money.

Would not cut threw stainless at all. Worthless.

It comes with an arbor. I had only 2 holes to cut, and it handled the job fine. It was pretty cheap, and it would probably cut a lot more holes, if I needed them.

A bit heavier than anticipated, but this leads to longevity. It did the job well.

bought to install dryer vent, going through plaster and lath, ALL teeth were smooth and rounded just in the plaster (old horse hair plaster, very soft) would not cut through to outside, had to run to hardware store and buy another brand to finish cut, obviously not hardened teeth, or bi-metal, waste of money

Couldnt even get through 1 piece of 20 gauge sheet metal.