I have some of those. But I got mine from zegifts.com she is the original person to make them. They are called rythm beads. They help you sinc with your horse throughout different gaits and help them calm down some. And their great to have if you trail ride because you warn other animals of your approach so theres less spook chance. They go slightly above where the necks ties in at the bottom. At zegifts.com she puts a mane clip to keep it from turning around and sliding off while your horses head is down. But you NEVER leave it on your horse while your not with him. I'll try to find a pic of mine some wheres but I think I deleted them.
Awesome Miss Take- Storm- 15 yr APHA PHBA Mare
SS Catalena Doll- Claire- 2010 AQHA Filly