Harris Calorific® 18-5 Series 10 1/2" Automatic Torch Handle has cutting capacity of 6" and welds to 1/2". Handle featuring Flash Guard® check valves has on/off feature for cutting, brazing and welding with all fuel gases. It has a gas control system to minimize operating cost and improve safety as well as convenience. Thumb operated on/off gas control and adjustable pilot light eliminates relighting and flame readjustment when the torch is used every time. It has "B" 9/16"-18 R+LH inlet connection and is UL listed.