Brass-plated 3-way socket (2 terminals) with 1/2" threaded hole that works with 1/4 IPS pipe (1/2" outside diameter). THIS WILL NOT WORK WITH STANDARD 1/8 IPS PIPE (3/8" outside diameter). Includes cap, shell, and interior 3-way socket that works with a 3-way bulb. We combine with other items to save shipping costs. $3.83 each. Shipping is $3.38 plus $.28 for each additional piece.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.
