4" 4-ply Silicone Charge Air Cooler CAT Turbo Coupler Hump Hose with Clamps Hot Silicone Charge Air Cooler CAC Coupler Hose Good Quality Replacement Parts, 100% Brand New. Both Ends(Inlet/Outlet): 4" Hose Long: 6" Thickness: 5mm. Item Includes: 1 Hose, 2 Clamps, 3 Rings Temperature Range: - 65 deg. F to + 550 deg. F (287 deg. C).4-Ply Nylon for Strong Reinforcement. only one item in the package