USB Cordle Electric Drill Grinder Rechargeable Rotary Tool Carving Machine Mini Grinder Woodworking Engraver Pen Power Tools Selling points: 1. The battery can be removed to facilitate the replacement of work lights with LED2. The electric engraving tool has five kinds of speed adjustment, and the speed adjustment range is 3000-15000 r/min.3. Perfect electric grinder for cutting, carving, milling, grinding, polishing, removing and drilling. Grinder engraving kit is neceary for DIY engraving and grinding.4. It is applicable to jade agate, nuclear carving, wood carving, grinding aluminum plate, thin copper plate, plastic plate, particle board, printed circuit board and epoxy board.5. Durable and reliable - small size, light weight, easy to carry, comfortable grip, providing better control during drilling, and easy to use. Specifications: Name: detachable battery, 5-gear adjustable small electric polishing machine with lightingBattery: 2000MAH lithium batteryCharging time: 2 hoursClamping range: 0.5-3.2mmSpeed: 3000/6000/9000/12000/15000rpmEngraving output voltage: 3.7VRated input power: 10WRated voltage: 110V~220VUSB: Micro USB chargingNote: In order to display the picture effect, all packages have only one battery (the battery has been installed in the product) Packing list: 1x detachable battery, 5-speed adjustable small electric polishing machine with lighting1xUSB charging cable1x battery charging line1x24 sets of various grinding heads