Iwata 6' Cobra Coil Airbrush Hose is made of a polyurethane material which is twice as strong and 1/3 the weight of conventional braided air hoses. Unique in its design, this air hose recoils out of the way when not in use. The attached Iwata airbrush fitting and 1/4" compressor fitting use O-rings which form leak-proof seals when attached.