... saving wrench for truck 2.Gear ratio:1:78 3.Max safe out torque:7500N.M 4.Material: ... and machines.Directions of labor saving wrench HLH-78:1. Length:330mm2. Gear ratio:1:783.Max safe output torpque:7500N.M4.Carton ... *37*23cm5.One set including two sockets.The size of 1'',22'',24'',27'',30'',32'',33'',34'',35'',36'',38 ...