SHINA 145 Piece Rotary Tool Accessory Set - Fits - Grinding, Sanding, Polishing Grinding stone (type 1) 1/2-Inch diameter 3pcs Grinding stone (type 2) 3/8-Inch diameter tapered 3pcs Grinding stone (type 3) 3/8-Inch diameter 3pcs Cut off wheel (Red) 15/16-Inch 36pcs Cut off wheel (Black) 15/16-Inch 36pcs