Plus Series Torches, 10 in 90 Deg Head, Tip Series:1 no checkout shatter resistant polycarbonate This type of plastic shatter resistant polycarbonate This type of plastic has more than 30 times the impact resistance of safety glass Withstands prolonged exposure to ultraviolet rays decreasing fatigue Provides good snag 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