Great in generating the sensory stimulation in the brain many people with ADD/ADHD, Autism, Anxiety, etc are craving. Having ADHD drove me to pick at my fingers and nails until they were painful and bleeding. Having something I can use to redirect my fidgeting has allowed my fingers to heal and become healthy.

Construction:
-1”(25mm) nickel-plated silver steel round-edged rings
-Re-purposed bike chain link and spacers
-Latex-free silicone o-ring bead spacers