A fascinating construction set to create a variety of marble runs with 53 wooden building block style pieces and 10 glass marbles.Watch the marbles roll down and around the chutes and through small tunnels on their way to the bottom.Up the ante and challenge yourself, integrate with household items and furniture to construct a truly unique maze every time.High quality, dense, and smooth wood allows the marbles to glide quickly through your personal maze design.Blocks are chunky and easy for small hands to grasp.There are many fun possibilities and routes you can build with your Wooden Marble Run 63 piece set! Glass marbles sized 16mm.Includes instruction sheet.Ages 3+