Optix P.RA Diamond 4"x6" H4651 H4656 Rectangle Sealed Beam Housings + 35W H4 High/Low Replacement Halogen Bulbs Pair of 6 by 4 inches Replacment seal beam (HID9-130) H6545 Replacement for the H4656 glass seal beam with H4 bulbs. Two glass bulbs per order Fit some Van, Honda, Nissan, and Mazda.