Compact, DIN 1st stage uses flow-by piston design (p/n HL406) One HP and 2 MP ports Highland Mini Tech Gauge is made of brass (0 to 5000 psi) w/ rubber boot (p/n HL502) Miflex yellow hose is 40 in (102 cm) long (p/n MLP40-MY) Compact, low profile AltAir features single pull release X-Lock buckle (p/n RG300) Complete pony regulator system.