Standard Size D/e Cylinders (barb Outlet) * 0-15 Lpm * High Strength Lightweight Aluminum Alloy Body With All Brass Core * Green * Cga 870 Yoke And Cga 540 Nut & Nipple * 6 Year Warranty * Click Style And Easy To Read Flow Rates * Laser Etched: No Labels To Come Off * Protected Contents Gauge * Ribbed Flow Selector For Better Grip * Viton Rubber Yoke Seal With Brass Ring *