SAS Fort A Fortress Trailer Coupling Hitch Lock for Ifor Williams Knott Avonride

(Very commonly used on Ifor Williams Trailers, as the majority of Ifor Williams Trailers with brakes have the Knott Avonride Hitch coupling the FORT A has been specifically designed to fit. Knott Avonride, mostly found on Ifor Williams Trailers).

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