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