Flashback Arrestor Component, Oxygen Fuel Gas, Regulator Adaptor, 9 16 in to 18 TPI ORS NASCO 7506N99 and 7506R95 filters when 7506N99 and 7506R95 filters when used with gas and vapor cartridges Includes two N750027 filter covers and two N750038 filter spiders Crimped Wire Fill Which Has Been "Pre Flared" to Match the Working Angle of the Brush At Operating Speed 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 regulators