M-jump 12 Pcs 2”X 1” X1/4” Flap Wheels Set –3 pcs Of Each 40 60 80 and 120 Grits Aluminum Oxide for Remove Rust and Weld Burr – 1/4 Shank Fits All Drills

Im using them to sand chip marks on glass. I sand them to make them smooth with 40 grit, and move to higher grit values for finishing. Silicon carbide is harder than glass so it works, and Im very satisfied with the results. Right now I dont have a vice or stationary drill press, so it is a little awkward to hold the glass in one hand and the drill in the other. But the bits do the job. These inexpensive grinder bits are made of many pieces of sandpaper attached in a fan shape around a shaft. An ingenious design, and inexpensive to build. Each bit will last about 20 minutes of intense use as the sandpaper wears down to the shaft. A real stone grinder bit would work better and last longer, but youd pay a lot more. Highly recommended as a low-cost grinder solution.

Cheap & too stiff to be effective

These are very stiff, not flexible like i expected a flap sander to be. Maybe, it’s the small diameter (2”) that requires them to be stiff.

For all the complaints about not being true to 1/2. Cant speak to that, but a makita electric die grinder has no trouble chucking them. They stand out stiffly at rpm... so yeah, you need pressure to use them.

needed to sand down small areas, they worked perfectly.

Half of the shafts were bent. Some were so bad they were unusable. They seem poorly constructed and the usable ones dont last long. 2 stars for price, none for quality.

First one wobbled. Still works. Not high quality. But I didnt buy them for precision work. So OK for the price.

Great product; I would buy again.

I intending these for my dremel since I was in need of a bigger sanding wheel.. I purchased these which has a much bigger shaft and will only fit a standard drill not a dremel.

First one wobbled. Still works. Not high quality. But I didnt buy them for precision work. So OK for the price.