Features5-ply reinforced high temp silicone couplers set Hump coupler hose allows for expansion, movement and vibration between two hard pipes. Includes constant tension, spring-loaded, t-bolt clamps for a leak-free seal. Reinforced Silicone: These hump coupler hose features 5-ply reinforced high temperature material which meet or exceed SAEJ20 Standard. Hump Coupler Hoses: Allow for expansion, movement, and extreme vibration between two hard pipes while reducing the possibility of connections coming apart or having your hard pipes or other equipment break. Note: This coupling kit fits aFe intercooler tubes only