Description: This electric carving tool has 5 speed adjustment,speed adjustment range:3600-18000 r/min. Small volume, light weight, easily carry, comfort grip handle, offers better control while drilling,convenient to use. 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. Specification: Charging time:2hours Charge Voltage: 5V DC Collect Chuck Diameter: 0.5-3.2mm Speed:3600/8000/12000/15000/158000rpm EngravingOutput Voltage: 3.7V Rated Input Power: 10W Rated Voltage: 110V~220V Size Chart: 21x7x6CM/8.27x2.76x2.36inch Package Includes: 5 Piece Copper Chucks 5 Piece Drill Bits 5 Piece Flints 1 Piece Red Gasket Connecting Rod 1 Piece Stainless Steel Slice 1 Piece Small Wool Wheel 1 Piece Large Wool Wheel 4 Piece Sandpaper Reels 1 Piece Wool Connecting Rod 1 Piece Engraving Pen 1 Piece Usb Cable Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful online shopping!