Keyless phenolic socket (no outer threads). These are black, 2 1/4" tall and will accomodate a standard bulb. The bottom hole is threaded 3/8" and will work with standard 1/8 IPS pipe. Rated 650W-250V. We combine with other items to save shipping. You can buy in lots of 20 for less- see our store.$2.51 each.Shipping is $3.10 plus $.22 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.,RcmdId ViewItemDescV4,RlogId p4%60bo7%60jtb9%3Feog4d71f%2B0a7%3E-15003bd4919-0x100-->
