Marshall Excelsior Thermoplastic Hose. Flexible thermoplastic UL and CGA approved hose. Rated up to 350 psi working pressure with a 400 pound pull test rating. Each hose comes with two ends and fully crimped brass ferrules. 1/4 inch hose ID. All Marshall Excelsior hoses are suitable for high or low pressure applications. 1 inch 20 female swivel x 1 inch 20 male swivel. 144 inch (12 foot) overall length.