UNITREAD is India\'s only company to manufacture a complete range of quick couplings and the only ISO 9001-2000 DNV certified manufaturer in India(COUPLINGS WITH STANDARDIZED SIZES AS PER REQUIREMENT) #HYDRAULIC COUPLINGS: *SERIES ISO A 7241:Size:1/4\" to 2\"Working Pressure: Upto 350 BarMaterial: Carbon Steel/Stainless SteelApplication: Agricultural & Industrial *SERIES ISO B 7241:Size:1/4\" to 2\"Working Pressure: Upto 350 BarMaterial: Carbon Steel/Stainless SteelApplication: Agri