Features:1.Everybody need keep focus, relieve stress or simply relax during working hours. Built for creators, makers, thinkers, and anyone who wants to release their inner creativity and imagination. Just set Gyroscope on desk top, simply rotate it to reveal the mind-bending effect of a continuously flowing spherical helix.2.When revolving it creates an almost magical effect that looks like continuously flowing helix would merge into a surface. helps you relieving stress at work or inspire your creativity while brainstorming.3.Precise machined by aerospace grade aluminum and high-quality balls bearings.Helix-shaped groove milled alongside the whole surface. Designed on any desk or flat surface.4.Rotating base equipped with bearing continuously rotate-able and completely silent.Keep focus, relieve stress, cure autism, mind bending illusion with continuous silent.5.Revolving it creates a mind-bending 360 optical illusion.Five Colors with Two Sizes:Blue/Silver/Black/Gold/Copper(Each Color with Large/Small Size), Choose whatever you like.Great for use in the office.Description:This spherical toy is designed to on any desk or flat surface,and the rotating base equipped with bearing continuously rotate-able and completely silent.Specifications:Material:MetalOrigin:ChinaMetal classification:aluminumPackage Included:1*Spherical ToyNotes:1. Please allow 0-1 inch error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from real object.