Lightweight Tough Nylon Covered High Pressure Hose, Withstands 2000 Max PSI, Easy to Cut and Assemble. Accepts Earl's SpeedSeal Hose Ends Only. Earl's SpeedFlex hose is intended for use with Earl's SpeedSeal hose ends only. No other Earl's hose end is intended for use with Earl's SpeedFlex hose. The use of other manufacturers hose ends is not recommended. The use of stainless braid protected PTFE lined brake hose assemblies will result in a firmer brake pedal, improved brake pedal feel and better brake modulation.