STRONGHOLD Hitch Lock for Knott Avonride couplings-IFOR WILLIAMS TRAILERS SH5415
Sold Secure Stronghold Hitchlock Avonride Original. Fits most 50mm Avonride cast coupling heads from 1400kg – 3500kg including 575003, 575004, 575005 and 575008. Covers at least one mounting bolt to prevent coupling removal.