Very high quality silicone, made of a synthetic material better than nylon, which is commonly used in the manufacture of hose. The pipes are reinforced with dacron in 3 layers, which allows them to withstand high pressure. A great alternative to a regular rubber hose that will last you for many years! Material of manufacture: Reinforced 3-layer silicone. Temperature range: - 40 - +180 degrees Maximum working pressure: 2 mpa - 20 bar Wall thickness: 4.5mm Set: 3 hoses + 6 clamps Color: Black