Aluminium air pipe

Extruded aluminium pipe, powder coated blue and calibrated to size. That calibration is the point: the outside diameter holds to a hundredth of a millimetre along the whole length, and the O-ring in every fitting depends on it.Aluminium does not rust on the inside, so no rust scale travels down to your tools the way it does in a steel line. Available in 4 and 6 metre lengths and sizes from 20 to 110 mm. Saw with a fine tooth and deburr the end before you connect.