Diamond Finger milling bit. with 5/8″-11 Female Thread arbor (Grit 50/60). Enlarge, shape and/or round bevel existing holes in Porcelain, Hard Ceramic, marble and granite. (d) 1 Piece of 5″ aluminum velcro pad holder (5/8″-11 female thread arbor) and 5 pieces 5″ diamond dry polishing pad (also wet use).