Specifications: Color: Blue Speed: 8000-30000 RPM Collet Capacity: 0.5-3.2mm Max. Dia. of Grinding Wheel: 10mm Frequency: 50hz Type: Drill, Engraver, Polisher (with Soft Shaft) Voltage: 110-220V AC Power: 180W Speed Regulation: 6 Speed Length of Wire: Approx. 145cm / 57.1in Length of Soft Shaft: 107cm / 42.1in Item Size: Approx. 23 * 6 * 5cm / 9.1 * 2.4 * 1.9in Item Weight: Approx. 599g / 21.1oz (Electric Grinder) Package Size: Approx. 14.5 * 14 * 6cm / 5.7 * 5.5 * 2.4in Package Weight: Approx. 1756g / 61.9oz Features: The grinder engraving kit is necessary for DIY carving and grinding. This electric carving tool has six infinite speed adjustment. Suitable for metal agate nuclear carving wood carving. Manual sculpture, polished jade, stone, glass, wood, computer case, circuit boards, PC material drilling. High power and long using life electric drill. Perfect electric grinder for cutting, engraving, milling, grinding, polishing, removing and drilling.