Lay Flat Discharge Bulk Hoses are built using PVC tubes reinforced with 3-ply polyester yarns for long lasting durability. Yarns are made of one longitudinal and two spiral piles extruded simultaneously for maximum bonding and resistance to oils, grease, many chemicals and acids. All materials are strong, lightweight and non-water absorbing, providing a mildew-proof hose that rolls up flat for easy storage. Heavy Duty clamps assure tight fittings. Packaged in 25', 50', 75 and 100' lengths with couplings.Available in diameters 1½"-8"