Material Use anti-fall ABS material. Product size 4.33"x 3.94"x 1.1". Operation MethodCarefully 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,disrupt the position of beads of different colors,then start thinking about how match and restore the small beads of the same color in the same groove. Rotating Cube Puzzles Fidget ToysHelp children exercise hand-eye coordination and grasping skills,as well as training brain space and logical thinking ability Good Gifts and RewardsEaster basket stuffers,christmas giveaways,halloween party giveaway items,school classroom rewards,treasure box prizes,carnival prizes,pinata fillers, goodie/goody bag fillers,miniature novelty toys,party return gifts,and kids birthday party favor. Interactive Fun TimePersonal interaction,partner PK,Parent-child interaction can be enhanced when parents play with their children,and it is also suitable for children's play to expand the social circle.