High Pressure Hose, Flex Kevlar, {26 in | 66 cm} - The typical HP hose is a 7/16-inch male at the end that screws into the first stage HP port and a 7/16-inch female at the end that screws on to the SPG Our most popular HP hoses are {24 in | 61 cm} long for doubles, {26 in | 66 cm} long for singles, and {30 in | 76 cm} long for consoles. Length is measured from end to end of hose, including the fittings and their threads. All of these hoses are Nitrox Ready. Does NOT include the air spool which is required for attaching to an SPG or Transmitter.