High rubber airline-Rubber air line / hose is not as sensitive as plastic hose so if you are working in a cold or warm workshop this will still work-Hard plastic air lines tend to crack and therefore release air when not needed (not like this one) length of the airline 20MTR meters approx10MM  (inside diameter of the pipe).-Each end of the hose has 1/4 BSP female fittings attached onto the end.-Professional tool for commercial or occasional use.