2-circuit 3-terminal nite-lite lamp part sockets to wire lamps. (It works, for example with a Gone-with-the-Wind hurricane lamp. It lights the top bulb, the bottom, then both, and off.) (This is NOT a regular 3-way or off/on socket). We combine with other items to save on shipping. $2.18 each. Shipping is $3.38 plus $.14 for each additional socket.Combined shipping- to get cheapest shipping costs (when buying different items) please buywhat you need (WITHOUT SHOPPING CART) and “request invoice” (BEFORE YOU PAY) so we can send invoice with lower shipping costs. SHOPPING CART DOES NOT SEEM TO WORK FOR COMBINED SHIPPING.