Features: Wide range of applications for jade- carving, wood crafts, IC Chips,motherboard etc. 5-speed speed adjustable, speed control button required for different degrees of grinding Comfortable hand feel,compact body and the surfaces of the body is frosted. Type-C rechargeable, also can be charged by power bank- Wireless grinding pen, lightweight and easy to operate Specifications: Product name: five-speed speed regulating charging electric grinding pen Battery type: Type-C interface charging Product weight: 45g Product size: approx 123x20MM/4.84x0.79in Clamping diameter: approx 2.35MM Rotating speed: 7000/10000/12000/20000/25000 5-gear Product model: LXZ922245 Note: Transition: 1cm=10mm=0.39inch Please allow 0-1cm error due to manual measurement. please make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1PCx Electric Grinding Pen 2PCSx Grinding Tip 1PCx Wrench 1PCx Power Cord 1PCx Fastening Screw