Features: Cordless design overall small size, takes up no space and is easy to carry anywhere. Suitable for professional engraver and carving beginners. Engraving pen can be used for small to medium sized carving, sanding, cutting, drilling and lettering. Rotary tool have 3-speed variable speed adjustment from 5000 to 10000RPM, can meet the gears and speeds required for different light load projects. USB charging interfaces and charging cable, suitable for various USB output device power sources and can be easily charging. Ergonomic body with antislip soft rubber grip allows for added comfort and control during extended use, ventilation holes on the side to discharges heat and increase service life. Whether you are working on woodworking, metal fabrication, glass crafting, or home renovations, this comprehensive set provide the functionality needed for various applications. Specifications: Material:Metal,ABS Color:Green,Redness,Gray,Black,Orange Rating Voltage:3.7V Charge:USB 3 Gear Speed:5000RPM,10000RPM,15000RPM Length:Approx.149mm/5.86'' Package Includes: 190Pcs/Set Cordless Rotary Tool note: Please allow 1mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color of the item.