toy for beginner. Fine workmanship, alloy material, smooth surface and small size, attractive to people. Smooth surface safe to your skin. The balls are creative toys, that help learns to play with balls exercise their wrist strength. Features -Color:Blue -Material:Alloy -Size:5.50X5.50X3.60cm/2.16X2.16X1.41in -The yoyo string ball is made by alloy materials, and the product is safe and for children. -The yo-yos is very suitable to help beginner recognize and exercise their wrist strength. -Simple design will arouse you interest in it and won't put it down while. With fine shaft, can achieve smooth performance and fast rotation. This is a fixed shaft that cannot be unscrewed. -Yoyo toy is smooth to use and do not hurt fingers and promote its hands-on ability. -Exercising hand-eye coordination ability, response capability, physical coordination etc. Package list: 1 × yoyo ball 1 × Ring holder 1 × rope 1 × specification