Dynamic 5pc Grinding/polishing Stone Set - Premounted On 3/32" Shank : ( Pack Of 2 Sets ),HAWK" /> Includes 3 Packs Of 5 Piece Set Fit All Power and Cordless Drills and Grinders 3/32" Shanks Variety Of Shapes Material : Aluminium Oxide (Excellent abrasive for metals with hardness up to steel)