These are solid brass single circuit uno threaded keyless sockets for regular light bulbs. These must be operated by a separate switch. Bottom hole is threaded 3/8".We combine with other items to save shipping. $5.51 each.Shipping is $2.90 for 1 and $.18 for each additional socket.Combined shipping- to get cheapest shipping costs (when buying different items)please buy what you need and “request invoice” so we can send invoice with lower shipping costs. "How to Request Invoice when using shopping cart"---From your eCRATER cart, near the top of the page, move your mouse curser over our name “lamppartsguy” and a drop down menu will appear with the option to request invoice from seller.
