Conical design grinding punch for round holes in leather, this innovative tool features a diamond-coated surface for unrivaled durability and efficiency during the polishing process. The tool's tapered shape is designed for precision machining to precisely and efficiently grind round holes in leather products. The tool's diamond-coated surface provides exceptional durability, ensuring that the tool can withstand heavy use over long periods of time. The tool's high-efficiency grinding capabilities allow for fast, precise drilling and a perfect finish every time. The tool's tapered design the inner and outer edges of round punches from a minimum diameter of 2 mm to a maximum diameter of 15.5 mm. The internal grinding range is 3-18mm, and the external grinding range can reach 16mm. Colour:silver-gray Material:Emery + stainless steel Size:about 75mm Package Contents: 1 x Round Hole Punch Polisher Grinder Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.