... )Size:T16,T20,T24,T30, T2024,,T2430,T3030 3)Certificate:ISO/TS16949 T24/30DD Brake Chamber:1)Type:Single &Double Room2 ... :T12,T16,T20,T24,T30, T2024,T2424,T2430,T30303)Certificate:ISO/TS16949Single Room Air Chamber :Item No.StrokeR1R2L1L2L4 Push Rod ThreadAir ... ±45/8"-18UNF2A3/8"-18NPTF5/8-11UNC2A Brake Chamber T24/30