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

Small length. !

The arbor doesnt come close to fitting the hole saw. None of the arbors I already have fit it either.

Worked perfect , spring came off but still worked perfect

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.

There are a lot of review that say the blade dulled after one cut, or the threads stripped, etc. I had none of those issues. I bought this to drill holes in my RV floor, which is 3/4 plywood. Four successful holes later, its still pretty sharp and totally usable for future projects. You do have to watch when you stop the drill that if the saw is in free space, inertia will keep it spinning and it will unscrew from the arbor. After I cut a few holes, it was firmly screwed down to where I cant even unscrew it anymore, so the unscrewing was a temporary problem for me. I guess because I was expecting something unusable, I am really pleased with how it worked. Not for cutting metal for sure, but if you just want a few holes in plywood or sheetrock, this is a great cheap alternative.

Bought this for the sole purpose of cutting a specified 4” hole in the bed of my pickup for a B&W turnover gooseneck. It cut the hole in the bed and then I used it to cut a hole in the bed mat (as you can see in the picture). I’m happy with it because it met/exceeded my expectations. If it cuts anything else in the future that’s a bonus.

Great little hole saw for light fixtures - don’t get this if your doing a dryer vent as the vent is a little bigger than 4inches ( I had to test all the ways I could use this )

as pictured

It didnt cut my test piece of wood. Also didnt fit my corded drill, I had to borrow a cordless drill. Why the chuck was slightly bigger on the cordless drill than corded drill, I dont know.

Center drill broke immediately upon use. Good thing I had spare center drill from a Milwaukee smaller hole saw kit.