1,Supply truck trailer spring air double brake chamber. 2,Single chamber and double air chamber assembly. 3,T-24 BPW standard We can ... , semi-trailers. 1,Supply truck trailer spring air double brake chamber. 2,Single chamber and double air chamber assembly.3,T-24 BPW ... Produce brake parts similar like brake drum,brake lining,brake air chamber,slack adjust, adjuster arm,kingpin, fifth wheel. We supply ...