Extremely versatile unit! Screws onto any CO2 tank and depresses the pin valve by screwing down the knob. Can be used with Bottomlines, Drop Forwards, Remote Systems or Fill Stations. Improved design is more compact and won't leak! Lightweight black anodized aluminum unit with female side hole threaded 1/8" NPT (accepts standard CO2 hose fittings).
The 32 Degrees Universal Fill Adapter is newer, so it should be commonly available, both new and used.