Quick Connect Component, Male Plug, Brass, Fuel Gas ORS NASCO and heavy duty use Strong tough tempered and heavy duty use Strong tough tempered steel Nickel plated finish resists corrosion Scraper and file on outside of both blades Screw hinge permits adjustment Supple and durable full grain Goat palm and back Exclusive reverse scalloped Boarhide™ cuff for protection against sparks and spatter Reinforced thumb saddle for extended durability Boarhide™ palm patch for extended wear and protection Unlined and padded palm with wool insulated back 000 operations indicating a service life of 10 to 12 years of comparable use Non interchangeable oxygen and fuel gas connectors prevent accidental gas mixing Instant closure on reverse flow check valves with total shutoff at only 10 oz of back pressure Brass construction provides long service life Cycle tested over 100