Plus Series Welding Handles, 9 in, Tip Series:1 no checkout Eliminates knot movement resulting in Eliminates knot movement resulting in the most effective cleaning action breathable material for cooler extended wear comfort Orients harness for quick tangle free donning Cushioned tubular webbing in the shoulder straps Friction buckle shoulder straps preheat control valve flow and reduced user fatigue due to improved balance Improved access and reparability of mixer with single nut removal Superior cutting oxygen valve with improved feathering ease on control No wrench flats on connection nut indicates hand tightening only for safer operation Internal connection snap ring prevents coupling nut sliding and exposure to o rings for reduced damage Improved head durability