Diamond coated files may be used on carbide, hard steel, glass, stone, fiberglass, graphite and ceramics. The diamond particles are plated to the needle files with a hard chrome bond for long life.
Set contains one each round, 1/2 round, square, three square, equalling files
Coated length: 2-1/2"
Grit: Medium (120/140 grit)
Made in Israel