Scubapro Superflow LP (Low Pressure) Hoses are made from high quality materials so they last longer and are designed to lalow the maximum flow and therefore best breathing performance for Scubapro Regulators. These hoses are a traditional rubberised hose not a braided "miflex" style hose. The hoses are the standard Scubapro lengths, 3/8ths male end for your First Stage with a standard regulator swivel fitting on the other end, ready to easily fit to any Scubapro Regulator.