... " weight:5.07kgs it fit for 148mm flange concrete pump quick coupling 5.5"NameConcrete pump pipe couplingSize2”-8”,other sizes upon ... coupling etc.(upon request)MaterialCarbon steelTechnicPrecision castingApplicationContection of concrete pump pipe and pipeBrandsSANY,SCHWING,PUTZMEISTER,KYOKUTO,CIFA,ZOOMLION,etc. concrete pump quick coupling ...