1.Material and Size: Made of high-quality Zinc alloy steel and plastic, the dimensions of the ring is 1.6 inch(4 cm), suit for most size of Smartphone. 2.Craftsmanship Awesome Surface: The spinning is in the middle of the revolving ring and the adhesive cover,rely on the bearing to work, the Fan-shaped Hollow shape rotating round and inside beautiful landscape picture provide you to enjoy. 3.Multi Ability: Perfect for cellphone user prop up the cellphone you just to hold the round ring, and good for stress people as a relieves anxiety toy when through your finger to flicking the gyro it will peace and focus. 4.Reusable: Reliable and super strong paste on Smartphones and Tablets, no sticky residual after detaching, dust can be washed out using clean water to restore strong adhesiveness. 5.Special Support: Stand your mobile phone up at different angles, no fear of dropping phone, when you are bored with something and you can spin the rolling ring for fun and take relax.