(Type) Voltage: 110V, 0.1A | Power: 65W | Speed: 4200r/min | Color: Red | Rotating shaft (thin shaft of grinding head) inner diameter: 0.7cm, grinding wheel inner diameter: 0.79cm (DIY Applicable Function) glass grinder is suitable for various forms of grinding and design of materials of various hardnesses such as glass, marble, ceramics, etc.: flat, curved, filled, beveled, etc. Diamond grinding wheel with novel design, widely used in glass processing, art and decoration. (Excellent Design)This stained glass grinder, after adding water, water self-feeding design for cooling and dust elimination. (Safety and Portable)This compact and portable stained glass grinder has an acrylic baffle, which can effectively prevent splashing during use and make the operation safer. For DIY enthusiasts is very convenient to take out.