Features: Practical toys: For autistic and hyperactive adolescents and adults who usually fidget, the bike chain toy is both useful and funny. It can keep them focused, relieve stress, anxiety and pressure in life, and calm them down. Sturdy and portable: The roller fidget chain toy is made of quality stainless steel and rubber for durability, rust and corrosion resistant, which is also lightweight, compact and portable, so you can put the roller chain toy into your pocket, briefcase, or backpack, and then enjoy playing with this anxiety relief toy at will. Specifications: Material: stainless steel and rubber Size: as pictures shown Color: as pictures shown Quantity: 32 pieces Package includes: 30 x Fidget bike chain toys 2 x Marble fidget toys Notes: Manual measurement, please allow little size errors. The colors may exist slight differences due to different screens. Suitable for people over 12 years old. Small items, please keep away from people under 3 years old in case of swallowing risk.