Mercury-style grill bezel bars can be orientated horizontally or vertically Grill bars 1/4" wide by 1/4" thick, air gap 1/2" wide The convex grill bows out 1-3/8" Fully machined 6061-T6 billet aluminum housing Diameter is 6" Will not fit Harley-Davidson headlight buckets They may fit other aftermarket buckets with screw-in bezels