Shop for HID lampholders / light bulb sockets with the following bases (BAY22d, Fc2, G12, G8.5, GU6.5, GX10, GX16d, Medium E26, Medium E27, Mogul E39, Mogul EX39, Mogul Bipost G38, PG12, PG12-1, PGJ5, PGZ12, PGZ18, R7s, RX7s).  We offer a large assortment to choose from so we should have the one you're looking for.  Buy at low factory direct pricing.