- 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 - WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
