Kangnice Hot 136pcs Rotary Tool Accessory Bit Set Grinding Polish Cutting for Dremel 1/8" 136 PCS electric polishing kits for DIY polished engraving, cutting, polishing / wood, metal, mold p This electric polishing kits has grinding paste, grinding stone, sandpaper, polishing wheel, etc Cutting piece: suitable for cutting metal,Steel wire brush: used for metal surface rust removal, etc must cooperate with rubber connecting shaft to easily use,Sandpaper ring: suitable for grinding wood Shank diameter: 3mm,Shank length: about 35mm