Lucas branded chromium plated headlamp rim to suit 7" aperture in headlight shell. Outer edge (front) ID approx 6-5/8 inches, OD approx 7 inches; inner edge (rear) ID approx 7-1/8 inches, OD approx 7-1/2 inches. In a genuine Lucas box and branded on the rim. Fitted to most makes eg AJS, Ariel, BSA, Douglas, Enfield, Matchless, Norton, Panther, Triumph, Veloce. SSU700R
