This solid brass adapter is a double-sided hex stud designed exclusively for the Convi Clamp or Super Viser Clamp Systems. One side has a 1/4”-20 male thread and the other has a 3/8”-16 male thread. This stud is made from solid brass.
Thread conversions from 1/4″-20 to 3/8″-16 are quite common. This little stud will give you the ability to join two items together with different thread diameters. Check out the video below to see one of the many applications of this incredibly useful adapter.
Link to the product page with specifications.