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

Worked as described, good quality for the price. Used to saw holes for recessed lighting.

worked as expected.

Cuts drywall without damaging wall finish Proper size for electrical box

Very happy with purchase. It saved a ton of time during the install of our basement lights. It was well worth the price when you factor in the time saved.

I bought this for making corn hole boards. Works great. Go slow. Patience makes it last longer

This saw and arbor feel solid and looks like it’s a good price/quality ratio.

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.

Looked like it would work good but havent used it yet got it to move my dryer vent

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.

This is a bad and cheap tools after opening for light in the ceiling it’s was no good I have to go to Home Depot to buy a good one just got yesterday day u shouldn’t sell this item no more