Category: Fidget Toymaterial: stainless steel/coppersize:1.3in×0.5in×2.1inwight:130gFingertip decompression toy, relieve anxiety, feel comfortable, , full of mechanical sense,the fingers will move more comfortably, and the rhythm is superb. The internal use of strong magnet, and advanced bearings, the sound is crisp and clear. Small size, easy to carry around.Tip: Please do not place it in a high temperature environment, the magnetism will disappear when the temperature is higher than 70°.