Trailer Couplings - Non Braked Light weight to heavy weight couplings to suit 1 7/8 or 50mm towball or duofit Coupling 3500kg 1 7/8 Geomet VIEW OPTIONS Pressed Steel Coupling - 900Kg Recommended maximum tow weight. VIEW OPTIONS COUPLING V2 2500KG DUOFIT 50mm-1 7/8" VIEW OPTIONS Duofit Coupling 3500kg VIEW OPTIONS TOP