You have a Hollis Submersible Pressure Gauge (SPG) see SKU: HLSPGM and need just the right length Hose for your set-up. Do you need a short hose for use with a stage bottle or a full-length hose for your primary regulator? Whatever your need is Hollis has a hose to match those needs. Hose is available in 6" (15cm), 9" (23cm), 24" (61cm) and 28" (71cm) lengths. Hose is a durable braided with rubber jacket hose and comes equipped with corrosion resistant chrome plated brass fittings. Hose has a 7/16" male threaded end for attachment to your first stage regulators high pressure port. Hose is complete with O-rings, so it's ready for hook-up out-of-the-box.