BQ14Impact wrenchs 　 Bolt capacity 　M14 　Free speed 　7000rpm 　Max Torque 　560Nm 　Weight 　2.68kg 　Square drive 　12.7mm 1/2 in 　Air inlet thread 　ZG1/4"-19 Working Air Pressure 　0.40MPa-0.8MPa 　Test Air pressure 　0.63MPa We are Zhejiang Jinyi Electric Tools Co.,Ltd. in china.We supply electric tools,water pump,grinding wheel and air tools with good quality and low price. If you have any query, Please contact us to know details.