Polarstar Braided 42" Inch Airline W/ Mrs Regulator SystemSPECIFICATIONS: BRAND: POLARSTAR MATERIAL: CARBON FIBER STITCHING COLOR: BLACK COMPATIBILITY: MOST HPA AND SLP TANKS PACKAGE INCLUDES: 1X AIRLINE, 1X REGULATOR FEATURES: MULTI STITCHED BUILD HELPS PREVENT AIR FROM LEAKING CAN BE CONFIGURED TO DIFFERENT OUTPUT PRESSURE CONFIGURATIONS THREADS DIRECTLY ONTO YOUR HPA TANK LIGHTWEIGHT CARBON STITCHED LINE WITHSTANDS WEAR 4MM PISTON BORE ENABLES VERY HIGH FLOW AND REFRESH RATE