Hose: A rubber air hose with heavy duty crimping and spring guard ensures longevity; The sealed spring provides an automatic return with 8 locking stops, a roller guide and ball stop; Making the air hose reel suitable for automotive use. Mounting: The mounting base is slotted with an adjustable roller arm that has 5 positions for multiple mounting configurations; The self-leveling system of the model rewinds the hose evenly for trouble-free use. Material: The spring powered drive with a maximum pressure of 300 PSI, makes the hose reaction quick, automatic and easy; The heavy duty steel construction adds durability and longer life cycles.