Conversion head: Supports multiple devices, handheld electric drill, impact drill, lithium electric drill. Meet your different needs. (This product is only a conversion kit that does not include an electric drill, you need to bring your own electric drill) Quick chuck change: Quickly install the chuck without tools, which is convenient and fast. Transmission system: The high-hardness drive shaft is matched with high-hardness bearings, doubling the endurance and durability. Protective baffle: Prevent hands from being scratched by splashes, protect safety, and use more safely. Drop-resistant and durable: High-strength anti-drop structure shell, precision processing and casting, strong and durable. The auxiliary handle can also be disassembled, and the threaded design is convenient for disassembly and assembly to create a comfortable handle.