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

This hole saw was the perfect size but only to be let down by all the teeth being gone after 1 hole was cut. I am going through plaster but it states its good for plaster. Might be fine for drywall/sheet rock but Im not sure. Im very disappointed in this purchase

The threaded hole for the center bit was tapped crooked. Completely unusable.

Very nice for the price and worked for my cornhole boards.

I needed this hole saw for an at home DIY project and it met my needs with no problems. Having sold/used commercial brand hole saws in my prior life I can tell you this saw and arbor are not the same quality as the red box or blue/white box products, but you are also talking a fraction of the price. Overall I am happy with this product. It fit my needs for a one time DIY project at a very affordable price & I would recommend it to a friend with similar needs.

I got it to use when building speaker boxes, it works fine

Pretty good quality

The shank stripped on first use. Returning.

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

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.

This came with the threaded hole way off and stripped out before the first hole was complete.