This is a 3 component hose consisting of an inner EPDM hose (most companies stop right there!) over braided in nylon, then over-extruded with a jacket of EPDM. The result is a hose that has incredibly soft feel with great flexibility, yet exhibits minimal expansion under high pressure to ensure that your efforts go into inflating the tire and not the hose.
Easy replacement highly recommended
My 1980's era Silca pump is now working like brand new.
Wish the clamps were the spring loaded ones, instead of ones that need to be crimped.