double brake chamber TYPE: 30/30 STROKE: 64/64 Application in truck,heavy-duty truck,trailer,specail-purpose vehicle,e double brake chamber TYPE: 30/30STROKE: 64/64PORT THREAD ... typical service and parking force requirements whether for cam, wedge or disc brake installations.ZHEJIANG ZHONGDUN MACHINERY CO., LTD specialized ... ,RVI,PEGASO,SCANIA,IKARBUS,TAM,HOWO,MAN,DENNIE,RENAULT. double brake chamber