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

Did exactly what I bought it for, drill 6 whole in 1/2 plywood. Locked in place, as some others do not as I read in reviews of other products.

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

Broke on first use , not much else to say

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.

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.

Used it to cut a hole in my living room cieling to install a cieling fan. Home Depot has one for $38. This one was only $13 & I might never use it again. So...

Value and precise size of finished hole.

Well it makes holes

This will not fit either of my black and decker 3/8 drills. I contacted the company and this is their response: Hello ，thank you for your feedback, we dont find your video or picture , but i send you some pictures in attachment of the 3/8 arbor, you can see we measure the distance between two sides, please note it is two sides not two corners. this is the customary standard in the hardware tool industry. another question is to see if your chuck of electric hand drills is marked 3/8, sometimes the chuck is not standard too. so there are many reasons for this. in fact we are company in China, no branch in USA, so we cant send you another pcs for test. but if youd like to buy this stronger arbor, maybe can be better, but not sure if it fit your chuck, the link is : https://www.amazon.com/dp/B081VQQQT4?ref=myi_title_dp . and another way is that if can not use it, please return this item to amazon. sorry for it. and hope you have a nice day! regards Jack The three pictures showing the measurements are the pictures mentioned in the response. The key point is the measurement of the arbor is not point to point, its side to side. It might fit most 3/8 chucks but not all. Good luck.

So why ask me to write a review if you won’t post it. Just telling you like it is. So if it is neg. You won’t use it . I’am glad that works for you , will think twice before I order again.