Features: 1. Simple Working: Cordless design allows for more flexibility in your movement and operation, very simple and reliable.2. Efficient Work: With 5000rpm, 10000rpm and 18000rpm in speed adjustment, the rotary tool will improve your efficiency.3. Quick Charging: The USB C interface enables quick charging, also can work continuously for an hour when fully charged.4. 7pcs Grind Bit: Including 7pcs grinding bit in different shapes, which will surely satisfy your various working needs.5. Great Material: Adopting high quality aluminium alloy material with a light weight and a compact size, very durable. Specifications Item Type: Rotary ToolProduct Model: SG-02Applicable Grinding Bit Shank Diameter: Approx. 2.35mm / 0.09inCollet Depth: Approx. 25mm / 0.98inSpeed: 5000rpm, 10000rpm, 18000rpm, 3 gear adjustment.Product Power: 10WBattery Parameters: 14500 lithium ion battery 4.2V 300mah, delivery with built in battery.Work Time: When fully charged, the no load operation on 3rd gear is more than 1H. If you need to use it for a long time, you can use it while charging.Package Includes: 1 x Rotary Tool1 x Charging Cable, 1 x Hex Wrench, 7 x Grinding Bit