Flashback Arrestor Component, Oxygen Fuel Gas, Torch, 9 16 in to 18 TPI no checkout Five piece canvas back Knit wrist helps Five piece canvas back Knit wrist helps keep dirt and debris out of the gloves Striped canvas gloves with leather palm and fingers provide great protection and finger dexterity Split bite jaw increases grip over standard bite chucks by providing more contact with the bit Superior gripping force provides high mechanical advantage to convert hand tightening torque into superior bit gripping force Hammerlock® mechanism is a positive locking mechanism that prevents loosening in hammer and other high vibration applications Anti lock nut prevents chuck from lock opening Precision operation that meet or exceed stringent din run out and dimensional specifications regulators Color coded for gas service to provide added safety Internal check valves designed to prevent reverse flow and accidental mixing of oxygen and fuel gases Torch and regulator models provide downstream and upstream protection 10 in maximum cutting capacity For stopping flashbacks by preventing ignition of mixed gases and to protect equipment such as hoses