Psychic silicone hoses outperform and outlast stock rubber hoses. These are a quick and worthwhile upgrade for any bike. Manufactured from puncture-resistant silicone Embedded with woven polyester for both strength and flexibility Teature resistance from -40° F ? 356° F (-40° C ? 180° C) Maximum working pressure: 58PSI UV, water and ozone resistant (won't dry or crack over time like traditional rubber)