4mm Double Ball Joint

This is designed to work with toys, such as Transformers figures, who have a 4mm socket in the base of the head and a 4mm socket in the body.  Great for customizers!  This model comes with a shorter and wider 3mm post which helps minimize head wobble you might get on some figures with wider neck openings.

 

This piece also works well with Jewelry as a connector piece and can be made available in several different printed metals upon request.