Harris Model 301AR-58010 Argon flow gauge single-stage regulator kit is designed to be compact, lightweight, medium to heavy-duty and rugged. Regulator provides accurate pressure regulation that is ideal for small cylinders or confined spaces. It comes with 2" dual scale gauge, 10' hose and a minimum left-handed outlet of 9/16" in a clamshell packing. It features one-piece encapsulated seat design with an internal filter and a PTFE Teflon seat.