Our ratchet wrench is used for quick assembly and disassembly to improve the efficiency of quickly disassembling screws during work. Sub-Type: Ratchet Angle Wrench. Powerful Electric Ratchet Wrench - Our cordless ratchet wrench provides a maximum motor of 12 volts and a torque of 420 Nm, making it easy and quick to disassemble or tighten nuts and bolts.