Made of rubber and emery material, these bristle discs are wear resistant and durable.
Suitable for metal fine finishing, cleaning, polishing, grinding, deburring, removing rust and scratches.
50#, 80# grit for polishing hard metal, 120# grit for polishing aluminum.
1/4 inch shank fits most of electric drills.
Perfect electric drill accessories,easy to install and use, convenient and fast.