Earl's UltraPro Series hose-ends are manufactured from premium materials to be light weight and rugged and are perfectly matched to Earl's UltraPro Series hose. Earl's UltraPro Series hose-ends feature ultra high-strength 2024-T8 aluminum in high-stress components, and fluoroelastomer internal seals which are chemically resistant to all known fuels, oils, and coolants. They feature brazed bent tubes for unmatched strength and all unnecessary weight has been eliminated from Ultra-Pro components.