For: Cylinder with Large Neck/Valve Cylinder with Small Neck/Valve Standard DIN Regulator/Valve Small DIN Regulator/Valve Cylinder Valve Bonnet Nut Standard Yoke Regulator/K-valve Large Low-Pressure Port/Hose High-Pressure Port/Hose Manifold and Manifold Port Plugs Standard Low-Pressure Port/Hose (3/8 UNF) Low-Pressure Hose/2nd Stage Regulator Cylinder Valve Stem High-Pressure Hose/SPG swiv.