Metallic fingertip fidget spinner toy stress relief entertainment: fidget spinners are stress relief toys that can help people relieve stress, relax their body and mind, and increase entertainment and fun. reaction training: fidget spinners require the coordination ability of fingers and wrists, which can help people train reaction and hand-eye coordination abilities. improved concentration: using fidget spinners requires concentration, which can help people improve their concentration and attention, and enhance learning and work efficiency. transparent gyro fingertip with light luminous colorful luminous finger pressure reduction toy