Available in Oxygen and Air. Available in 25, 15, 8 and 4 LPM. Comes standard with a 1/8" FNPT connection but will be custom Product Name:          Click type flowmeterProduct Model:          4000-SDescription:Available in Oxygen and Air.Available in 25, 15, 8 and 4 LPM.Comes standard with a 1/8" FNPT connection but will be custom configured upon request.Available with a variety of adapters and accessories.Body is color coded to specific gas.Available in USA and ISO Colors.