Features 1. Relieve Stress: Rotating the rot ball can help calm relax the brain, reduce anxiety, help you concentrate better. 2. Visual illusion display, seemingly floating using strings, the ball seems to be able to move up down. 3. Gifts: Made of high-quality materials that are timeless: metal glass. Featuring a 12 inch (approximately 30.48 cm) spiral body rot, it can be used viewed directly, packaged in a beautiful box, making it a classic Qwirly gift perfect f birthdays, holidays, any other occasion. 4. Durable Aesthetically Pleasing: When placed in urban apartments, offices, crids, outdo gardens, the appearance is exquisite. 5. It can be placed under the dynamic wind chime to combine enjoy. A 12 inch tail with a large ball size of 5cm a small ball size of 3cm. Specification Material: MetalandCrystal Glass Col: Yellow, Purple, Blue, Green, Red, Lake Blue Size: 30 x 10 x 10 cm Weight: 350 g Package Include: 1x Spiral Wind Spinner