3. Insert the chuck with built-in magnet.Match with a drill bit.There be a slight when the drill bit is inserted, and of the drill bit be uneven during operation, which does not affect the actual use. 2. This product is located in the general household, not suitable for high-intensity use 4. The drills in the package are normal drills.USB port charging, factory standard charging cable.All packages are without charging head. 1. This product is an electric screwdriver, built-in lithium battery, non-removable. 5. Motor all copper movement, high speed, high torque, Weight: 0.46517537282 pounds, Manufacturer: Gishbjka