About the items :Function: the fidget chain can be applied to pressure-relieving, reduce anxiety, and make you focused, it is also helpful for people who have ADHD and ADD, convenient pressure-relieving small toys, share with family and friendsMulticolor chains: these fidget toys come in various colors, yellow, red, green, light blue, black and orangeWide usage: the fidget chain toy can be applied for classrooms, offices, meetings, airplanes, bus, etc.; You can take it out whenever you want to play with itProper size: each fidget toy measures 30 x 21 mm, easy and convenient to carry with you, great for hours and hours of fidgeting in creative ways, which can help you relieve stressful or get through boring timesGood material: the ring frame and chain links are made of stainless steel, corrosion-resistant and sturdy, not easy to break, durable for long-time useFeatures:Stress relief effect:This bike chain fidget toy can effectively reduce stress and anxiety, help autism and hyperactivity, improve concentration, calm people's mood, and promote blood circulation in the hands.Lightweight and small:This fidget chain toy has light weight and small size, which can be carried in your pocket or bag, helping you to relieve tension and effectively release stress when you are emotionally stressed.Specifications:Material: stainless steel and silica gelColor: as shown in picturesSize: as shown in picturesPackage includes:1pcs x Bike chain fidget toysNotes :1.There could be some slight differences in the color tone of the pictures and the actual item.2.Please allow 1-2mm differs due to manual measurement, thanks.3.If there is any problem with the product, please contact me before you leave a comment, I will do my best to solve the problem for you.Thank you for your understanding.