The 70-ADAPTER-CGA600toC10 | GOVC10-CGA600 | is a C-10 adapter for the 17 Liter Steel and 34 Liter Steel cylinders which have a CGA 600 Connection Type (male threaded) converting these cylinders to a C-10 Connection type (Female threaded).
Additional Information: The 70-Adapter (fits 17 Liter and 34 Liter STEEL cylinders) converts the CGA 600 cylinder to a C-10 connection (making a C-10 regulator usable on a 17 Liter or 34 Liter Steel cylinder)