Features: This rotary tool set includes a high-performances and low-noise rotary tool with 22pcs rotary tool accessories for fine DIY work. The cordless rotary tool has 3-speed adjustments (8500 15000 21000RPM) for easier speed controling and to meets the power demands of different tasks. This cordless rotary tool has a 2200mAh battery and a usb charging type, easy to charge. This rotary tool is powerful yet small and light, giving you ultimates controling and precisions, as well as comfort, just like holding a pen. Crafted from sturdy metal, this grinder ensures durability and reliability, making it a dependable choice for professional repairs and DIY projects. Specifications: Material:Metal Speed :8500 15000 21000RPM Clamp:2.35-3mm (need to change chuck) Voltage: 3.7V Charge:USB Battery Capacity: 2200mAh Application:Engraving,carving,drilling,polishing,cleaning Package Includes: 1Set Rotary Tool note: Please allow 1mm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item.