JINTO&reg; Alloy Yo-Yo Ball Professional Playing Toys for Children Material:Alloy Color: red, green, brown(will be sent by random) Size:50x40mm Weight:70g A perfect toy for kids, friends, families,etc Designed to train fine motor skills and eye-hand coordination. It can cultivate the imagination, creativity and rapid reaction ability It is not only for daily entertainment, but also for acrobatic performance with most entertaining fancy