Product Overview The Cordless Grinder Tool CAN2022 is a versatile, rechargeable device with built-in safety features, ergonomic design, and adjustable speeds to cater to various grinding and polishing needs. Features Built-in Battery: 2200mAh lithium battery with USB charging, offering overcharging, discharging, and overload protection. Circuit Protection: Includes a security circuit board with an intelligent overload chip for safety. Easy to Control: Lightweight frame and ergonomic grip for precise, labor-saving use. 3 Gears Speed: Adjustable speeds of 8500RPM, 16500RPM, and 21000RPM for various materials. Accessories: Comes with grinding pen, wrench, collets (1/8 and 3/32), and Type-C charging cable. How to Use Charge the device fully using the included Type-C USB cable before first use. Select the appropriate collet size and attach the grinding tool. Adjust the speed setting to suit your material (8500RPM, 16500RPM, or 21000RPM). Grip the tool securely and use light, controlled movements for optimal results. Turn off the device after use and clean as necessary. Specifications Material: ABS Battery: 3.7V 2200mAh Lithium (built-in) Power: 35W Speed Adjustment: 3 settings (8500RPM, 16500RPM, 21000RPM) Charging Time: 2 hours Maximum Collet: 3.2mm Warranty: 6 months Warning *Keep out of reach of children