Bulb 12V, 55/60 Watt Bulb Material Advanced multi-surface aluminum reflector design and clear glass lens Unit & Package Sold by each, color display box Part No. Retrofit/Interchange Type Size Bulb Halo Features Adapter 77390 6052, 6053, H6054, HP6054 Rectangular 7.85 x 5.6 H4 No No 77391 6052, 6053, H6054, HP6054 Rectangular 7.85 x 5.6 H4 Yes No 77392 6052, 6053, H6054, HP6054 Rectangular 7.875″ x 5.6″ H4 No No 77400 HP4651, H4656 Rectangular 6.5 x 4.17 H4 No No — — — — — — — 77402 HP4651, H4656 Rectangular 6.5″ x 4.17″ #9007 No Yes