DC21V 380Nm Impact Power Cordless Wrenches Battery Power Operated, Makita Adapt Voltage: DC21V. Torque: 380N.m Speed: 3 Gear Adjustable Speed Forward and Reverse Auto Stop: Support No-Loading Speed: 0-3000RPM Impact Frequency: 0-3500bpm Chuck size: Out: 1/2"(12.7mm)-Square Inner: 1/4"(6.35mm)Hexagon N.W.: 1.1kg Refer Package Box: 38*30*15cm Package Box: 3.9kg(without battery) Battery Option: 3.0Ah/4.0Ah/6.0Ah