About this item 1.This is a metal ball which can have optical illusion when it rotates.It will allow you to have some little fun at spare time, and help you reduce stress. 2.It is made of special material aluminum, the spinner ball will be smooth and heavy. With a high-quality bearings inside, which will make it rotate longer and quieter. The bottom is soft plastic, can bear the power of rotation better, make the whole ball quieter and last longer. 3.This is for creators and can stimulate more imagination. When tired after work or need to think, turn it gently, not only can let you get a temporary relaxation, but also maintain more concentration and rejuvenate afterwards. 4.Don't know what gift to to buy someone? Then Manzelun ball is definitely your best choice. Not only it is novel, aslo can always on someone's table, making someone think of you when they see it. 5.I guess when someone sees this ball on the table for the first time, they will definitely be curious to ask you what it is, and then you turn it gently, this person will definitely exclaim,,,WHAT?? Item NO.510627463