BRASS BOTTLE KIT 3/4" GOLD CORD. 
Brass-plated pre-wired bottle kit with 3/4" rubber adapter (we also have 5/8" and 15/16") enables you to turn almost any bottle into an electric lamp. 
These pre-wired lamp kits come with:
 8' gold cord 
brass-plated off/on socket with side hole
3/4" rubber adaptor
steel nipple
check ring and knurl nut. 
3/8" threaded bottom hole with set screw that works with 1/8 IPS pipe. 
$2 minimum charge orders less than $20. 
$.50 packing charge for each parts box.