MaterialUse anti-drop ABS material. Product size 4.33" x 3.94" x 1.1".Operation method Carefully designed different O-shaped concave grooves, each groove has a number of small beads, which can move the small beads by pushing the middle module of it, disturb the position of the beads of different colors, then start thinking about how to match and restore the small beads of the same color in the same groove .Rotating Cube Puzzles Fidget ToysHelp kids exercise their hand-eye coordination and grasping skills, as well as training brain space and logical thinking ability. of treasure box, carnival prizes, pinata fillers, goodie/goody bag fillers, miniature novelty toys, party return gifts and children's birthday party favor.-Interaction with children can be improved when parents play with their children, and it is also suitable for children's games to expand the social circle.