This is the Hollis Low Pressure(LP) Hose 84 for Scuba Diving Regulator Features: Fits: Hollis Second Stage Regulators Length: 84" 213.4 cm Short Hoses Ideal for Stage Bottles Long Length Ideal for Primary Regulator Second Stages Durable Braided with Rubber Jacket Hose Corrosion Resistant Chrome Plated Brass Fittings 3/8" Male Threaded End The Hollis Low Pressure (LP) Hose is a durable braided with rubber jacket hose design. Hose has corrosion resistant chrome plated brass fittings with a standard 3/8" male threaded end for attachment to your first stage regulators LP port. "