Plus Series Welding Handles, 9 in, Tip Series:1 no checkout holds blade securely Cushioned blade return holds blade securely Cushioned blade return Eliminates knot movement resulting in the most effective cleaning action Improved head durability 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