1. Material: plastic 2. Moderate size, all in control 3. The axis is stable and does not shake at high speed 4. The bearing friction coefficient is small, and the rotation is more durable 5. Round and smooth, no burrs on the edges, no injury to hands 6. A variety of forms, deform as you like, and spin at extreme speed 7. Help relieve stress, exercise thinking and practical ability 8. Size: 7 x 10cm
1. 材质:塑料 2. 大小适中,尽在掌握 3. 轴心稳定,高速旋转不晃动 4. 轴承摩擦系数小,旋转更持久 5. 圆润光滑,边缘无毛刺,不伤手 6. 多种形态,随心变形,极速旋转 7. 有助于缓解压力,锻炼思考动手能力 8. 尺寸:7 x 10cm
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