Description: 【Cordless Electric Grinder】: Wireless engraving pen polisher set, the lowest speed will let you polishing, the highest speed are also for woodworking, metal carving. 【Features】: USB charging, low noise work. 3 speeds options 6000/9000/15000 r/min three gears, the body is made of alloy material, good heat dissipation, making your artwork diy. 【Various Grinding Bit】: Comes with different polishing bits and saw perfect for carving, polishing, cutting and polishing of multiple materials, and enabling you to achieve different crafting work efficiently. 【Easy to Carry】: Portable and lightweight storage box, easy to handle and carry it anywhere. 【Wide Application】: Our engraver tools are easy to operate, work on metal, glass, ceramic, leather, wood,jewelry,stone or statue. Specification: Material: Brass, ABS Size Chart: 14.8cmx2.5cm/5.83inchx0.98inch.   Package Includes: Optional Package: Universal: 1 Piece Electric Engraving Pen, 1 Piece Charging Cable, 23 Pieces Grinding Accessories Model Grinding: 1 Piece Electric Engraving Pen, 1 Piece Charging Cable, 23 Pieces Grinding Accessories, 6 Files, 10 Sanding Paper, 1 Sticky Dish Toys Grinding: 1 Piece Electric Engraving Pen, 1 Piece Charging Cable, 23 Pieces Grinding Accessories, 10 Stone Cutting Discs, 1 Clamp, 10 Grinding, 3 Files, 1 Sticky Discs, 10 Sanding Paper, 30 Grinding Tools