... axle,4 wheel, rear lights,self-unloaing, pneumatic brake tractor trailer,with CE,two axles,4 wheels,payload from 1 to ... 10 tons.self-discharge,good quality and high efficiency.tractor trailer, trailed by tractor, applicable for plains, mountains, wetlands, knap, rural ... or automatically air-cut brake can be chooseMatched Power50-60hp 40-50hp 35-40hp40 ' HQ 10sets 10sets 15sets