Lot of 10 complete off/on pull-chain solid brass socket, shell, cap to wire your lamps. These have shells with uno threads and pull-chain interior socket- cap has a set-screw to tighten to pipe. (We also have these with off-on turn-knob, keyless, or 3-way sockets.) The cap has 3/8" threaded hole to screw onto standard 1/8 steel pipe. Rated 660W, 250V. We combine with other items to save freight. $46 for lot of 10. Shipping is $6.40 plus $2 for each additional lot.Combined shipping- to get cheapest shipping costs (when buying different items)please buy what 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.