FidgetWorks Rutt Large Bike Chain Fidget for ADD, ADHD, Autism & Stress at Workplace or School Helps to lower stress & anxiety at home, school or the workplace. Smooth rolling & twisting movement for quiet and discrete fidgeting! Durable silicone rings & rust resistant parts ensure this fidget will last you years. Proudly built in the USA with 1 year warranty. Interlocking rings will provide hours and hours of fidgeting.