Manufactured from aluminum oxide. 
Rotary grinding stones suitable for use on a variety of materials, for cutting, deburring, grinding and polishing.
Can be used with electric or cordless drills, as well as rotary tools and drill presses. Maximum working speeds 3000-6000 rpm.

Options:

1. 5pc set: 6mm shank mounted stones, with ball, cylindrical, conical, small/large taper stones;
2. 10pc set: 3mm & 6mm shank mounted stones, with ball, cylindrical, conical, small/large taper stones;
3. 12pcs set: 3mm shank mounted stones, with tree, cone, large cone, cylindrical, and ball shapes;
4. 14pcs set: 3mm & 6mm shank mounted, with tree, cone, large cone, cylindrical, and ball shapes.