Rolled edges protect hose from abrasion. Silicone Radiator Coolant Hose 2.5" 3 Foot Stick For Peterbilt KW Freightliner. 2-3/4" Silicone Radiator Coolant Hose 36" Stick 4 ply For Peterbilt Kenworth. 3" Hump Hose Silicone High Temp Intercooler Turbo 1 Pair 6" Long.