Headlight Semi Sealed Housing 5 3/4" Inch Round With Park Bulb Pair. Accepts P43t H4 bulb. Comes as a pair two sem sealed fixtures. Has parking light T10 harness for T10 wedge. H4 bulb not included. Great for vintage classic cars, trucks, motorcycles to upgrade that old bulb to a new led bulb with a semi sealed fixture. Compatible with sealed beams H5001, 5001, 4001, 4004, H5010, H5501, H4001. CE and Rohs.