Description:

Features: 10.5mm grinder head dia, 21mm grinder head length, high strength, and good coaxiality.. Made of carbon steel and the grinding head coated with diamond, brazing treated, with higher abrasion-resistant, durable use.. This grinding drill bit is suitable for quickly cutting, drilling holes, engraving, finishing, grinding, carving, and repairing.. A good grinding tool for processing ceramic, glass, wood, marble, stone, concrete, and other non-metallic materials.. The 6mm (1/4 Inch) shank bit fits most of the electronic grinder, engraving machines, hanging mill, and hand electric drill..