Assemble Design: With adjustable chains, our sprockets can be disassembled and assembled arbitrarily, and a variety of combinations can not only exercise practical ability, but also cultivate children's DIY ability. Decompression & Relaxation: The chain is small enough to be carried anywhere you want. A great choice to enjoy it during work and queue, helps you improve your concentration and stress relief as well as quit bad habits like smoking. Multiple Spinning: You can spin it by gripping the button at one end of the chain with your thumb and forefinger, or roll it in your hand and on a table. Creating a relaxing sound like a bicycle chain. Quality Assurance: Our chain spinner are made of high quality stainless metal, 2 silent bearing bring you smooth spinning experiences, ensures long time use. ⚙Luxury Gifts: Everything will be packed in a zippered fiber case, which will not damage quickly. A perfect Christmas New Year present for your loved ones.