Diamond Octahedral Tip Dresser for Grinding Wheel Grinder Stone Tool Dressing Pen Repair Parts Grinding Wheel Sharpener Sharpener Tip Using high-quality synthetic single crystal octahedral diamond, it is strong and . Size: total length 48mm/1.89in, bottom diameter 10mm/0.39in color: silver Material: metal alloy Package Contents: 4 x Diamond Sharpener Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in a little different from the real thing. The measurement allowed error is +/- 1-3 cm.