Plus Series Welding Handles, 9 in, Tip Series:1 no checkout designed for extremely long life designed for extremely long life Cylinder is securely held by a spring loaded hold chain which is encased in a plastic tube Two rear casters give the truck greater stability Equipped with Non conductive wheels and casters 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