We're all about saving money! Make your own lanyards and save $$. Just add 14-16" of nylon cord (or any length you wish!) to these clips, slide on your large ceramic beads, discs and balls.. tie the ends.. you're done!! (nylon cording sold separately by the inch - only buy what you need!) Hook measures approximately 32mm, and swiveling D-ring measures approximately 13.6mm.