2" tall medium-based sockets (that can accomodate a "regular" bulb) with hickey at bottom to accomodate standard steel pipe (1/8 IPS)- 3/8" hole. These include brown cardboard insulator (not shown).We can ship with other items to save shipping costs. $1.81 each. Shipping is $2.90 for 1 and $.12 for each additional piece. 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.,RcmdId ViewItemDescV4,RlogId p4%60bo7%60jtb9%3Fvo%7B%3Dd70f%2Bf52%3E-13fcccc49a0-0xfb-->
