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2 (50mm) Threaded heater union tail, with a 1.5 (40mm Socket)
Suits Balboa, Gecko, Hydro-quip and many other style heater tubes.
1/2" Spigot to 3/4" Barb
16mm - 27mm Hose Clamp
16mm - 27mm Hose Clamp - Bag of 20
19mm Drain Valve Skin Fitting Only.