... Farm trailer,ATV trailer,Car trailer, single axle,2 wheel,dual 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, ... automatically air-cut brake can be chooseMatched Power50-60hp 40-50hp 35-40hp40 ' HQ 10sets 10sets 15sets