... Size:3/8",1/2" Material: Brass body and plastic handle Threaded ISO228/1. electric radiator valvesStructure: Brass Body, brass bonnet ... P.T.F.E, O-ring N.B.R, steel handle with plastic cover, brass screw cap, PVC cushion, iron inside dentation ... to provide colourful packageQuality Inspection:QA and QC acts accord with ISO9001 management ,regular checking on line from production in each ...