durable good breaking force no get rusty according to the standard of TQ-2-2 of JB/76673 Our company has superb technical strength, advanced technology production equipment, and perfect testing equipment, so that our Products sell well all over the country. In the auto part industry, we have a high visibility.Brake Chamber:1.type T16(we still can produce T20,T24,T30)2.stroke:57MM3.port thread:3/8 ...