Description: Suitable for grinding jade, agate, crystal and other materials The Mounted Point can be installed on the electric grinder, hanging mill and hand electric drill (not included here). Diamont coated, high quality, durable Easy to use 100% brand new Specification: Diameter: Approx.25mm/0.98 inch Head Height: Approx.18mm/0.71 inch Rod Length: Approx.35mm/1.38 inch Material: Metal, Diamond Color: Silver Package Includes: 1 Piece Diamond Grinding Head Note: Must use cold water to cool the head before use it
