The LINE2design aluminum uni-body oxygen regulator offers superior performance with a lightweight design easy to handle. . The aluminum oxygen regulator offers a (0-15 LPM) with constant flow settings that include 1/2, 1, 2, 3, 4, 6, 8, 10, 15 LPM. Regulator has internal brass components for increased safety and durability. It comes complete with low profile gauge with a black rubber gauge protector.