... 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: ... Length: 330mm5.One wrench includes two sockets. The size of 21'',22'',24'',27'',30'',32'',33'',34'',35'',36 ... '' are available.6.Weight:10kg/set Labor Saving Wrench Tools