Can be used on carbide, hardened steel, glass and ceramics. Made with a hard chrome bond that gives a long life and wears extremely well. Overall Length 5-1/2" . Diamond impregnated Length: 1-9/16". In fitted pouch. INCLUDES SHAPES: 2 of round, 2 of hand, 1 of square, Three - square, half round, barrette, flat, knife.