PORCELAIN SKT W/ METAL CAP 1/4 IPS. 
Glazed medium-based porcelain socket with attaching metal cap with side set screw. 
The metal cap has 1/2" hole to accomodate standard 1/4 IPS steel pipe. 
Rated 660W, 250V. 
$2 minimum charge orders less than $20. 
$.50 packing charge for each parts box.