FIRE FIGHTING EQUIPMENTS Hose Delivery Coupling ISI Marked IS: 903Technical SpecificationsSize: 63mmMaterial: LTB-2 Gun Metal - IS:318, Stainless Steel (SS)-IS:3444 & Aluminium IS:617Conforming Specification: IS:903Performancee TestHydrostatic (Body): Tested at 21 Kgf/cm2