*Built-in high spring design: the connection is not easy to disengage, *Multifunctional electric hammer square handle conversion head, widely applicable, fast switching. *Simple quick conversion: convenient and fast one machine for multiple uses suitable for a variety of scenarios. and the built-in strong spring makes the clamping ring fix the internal steelball to lock the for impact drill handle and is not easy to disengage., Weight: 1.1243575362 pounds, Manufacturer: Hipzeepo