Features:  Perfect electric grinder for cutting, engraving, milling, grinding, polishing, removing and drilling. The grinder engraving kit is necessary for DIY carving and grinding. Suitable for jade agate, nuclear carving, wood carving, grinding aluminum plate, thin copper board, plastic board, chipboard, printed circuit board, epoxy board. Durable And Reliable -Small volume, light weight, easily carry, comfort grip handle, offers better control while drilling,convenient to use. For Safe Use: 1. When you finish using the unit, switch off the motor and ensure that all moving parts have come to a complete standstill. 2. Before using additional accessories not included in this set, always compare the maximum allowed RPM of that specific accessory with the RPM of this tool. 3. In case o electrical or mechanical malfunction, immediately switch off the tool. 4. Do not activate switch when changing accessories. 5. Never use the shaft lock when toll is running. 6. Ensure that the collet size corresponds with the shaft size of the accessory. Specifications: Plug Type:US Plug,it applies to Canada, India,Mexico, Thailand, the United States, the Philippines,Taiwan and so on. The chuck can hold a range of 0.3-4mm, and the power supply is 3-12V adjustable speed US power supply Type: Power Tool Parts Usage: Home DIY colour:blue Material:aluminum size:120 x 30mm