ITEM NAME:Phot-R 1/4" to 3/8" Spigot Stud Adapter Male Threaded Studio Light Screw Description&Preview.1/4"" 3/8"" Spigot Stud Adapter Screwx1. One side is 1/4"'s head, one side is 3/8"'s head, can do the conversion screw, can turn to the lamp holder. Note: only a convertible screw, other is not included.
