This wrench is widely used to assemble and disassemble the tyres of various heavy trucks. Speed-change This wrench is widely used to assemble and disassemble the tyres of various heavy trucks.1.Speed-change2.Gear ratio: 1:3;1:583.Max safe output torque: 3800N.M4.Length: 330mm5.One wrench includes two sockets. The size of 21'',22'',24'',27'',30'',32'',33'',34'',35'',36'',38'' and 41'' are ...