Speed-flex hose is intended for use with speed-seal hose ends only. No other Earls hose end is intended for use with speed-flex hose. The use of other manufacturers hose ends is not recommended. The use of stainless braid protected Teflon(R) brake hose assemblies will result in a firmer brake pedal, improved brake pedal feel and better brake modulation. Teflon(R) is a registered trademark of DuPont Performance Elastomers.