"Never pay lease or rent charges again! Brand new industrial-grade welding gas cylinder has never been filled. Refillable and exchangeable. Provides approx 1 hr. burn time when matched with the same size oxygen cylinder, using an oxyacetylene cutting torch. #2 size 40 cu. ft. capacity Empty 23in.H x 6in. diameter DOT-approved cylinder CGA 520 male valve Provides approx. 1 hr. burn time matched with same size oxygen cylinder using a #0 (1/2in.) cutting tip on oxyacetylene cutting torch"
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