1. 100% EPDM Hose only use only the finest quality EPDM rubber for the most demanding automotive applications.This ensures Hoses perform better and look great without fading or perishing over time. 2. Premium Quality Reinforcing Fabrics use the finest Aramid/Polyester fiber, specially designed for automotive hose manufacturing. Fabrics are specially orientated to give required stiffness to resist dilation-associated problems such as loss of boost.Only with quality fabric will the hose have the strength to deliver reliable performance. 3. Complex Constructions Not all the hoses are the same - each Hose has a specific combination of EPDM compounds & selected fabrics to deliver the required performance, reliability strength and flexibility required, as well as complex bespoke shapes to suit every need.