Western Enterprises 314 Brass Cylinder Adaptors, from CGA-200 "MC" Acetylene to CGA-520 "B" Tank: Air Tool Fittings: Amazon.com: Tools & Home Improvement
Coreone Welding > Gas Welding & Cutting > TURBO-CORE AR-B Tank Regulator
Coreone Welding > Gas Welding & Cutting > TURBO-CORE G4 Air Acetylene Handle