Replica of Lucas MT211 rear lamp (with stop/tail conversion). As fitted to :- AJS, AJW, BSA, Cotton, Douglas, Royal Enfield, Excelsior, James, Matchless, Norton, Sunbeam & Triumph on various models from 1936-1950. Length: Aprox 3-1/2 Width: Aprox 2-1/2 Width of lens: Aprox 30mm