1.STYLE:T30/30DDair brake chamber 2:reliable quality ,resonable price. 3standard:ISO-9001 we are a manufacturer for spring brake chamber for trailer and seim-trailer truck. STYLE:T30/30DDair brake chamber ORIGINAL NO.:9253020020;3530010-250 STROKE:64MMINPUT THREADS:2-NPT3/8MOUNTING BOLT:2-M16*1.5MOUNTING BOLT CERTER:120.7MMPUSH ROD THREAD:M16*1.5PUSH ROD LENGTH:270MM STROKE:64MMMOUNTING BOLT:5/8- ...