Model 351 flowmeter regulator kit is designed to control argon shielding gas. The kit is supplied with a 3⁄16" x 10' approved inert gas hose. The Model 351 cylinder flowmeter regulator is zero-compensated for more efficient gas use. This flowmeter features a durable, easy-to-read, flow tube and cover. The regulator features a brass body, 50mm ABS plastic dual scale gauge, large plastic knob for precise adjustments and one-piece encapsulated seat desgin with internal filter and PTFE Teflon® seat to protect it from particulate contamination.