Playbox Wooden Montessori Zigzag Tracker Rollers Wheel Ball Drop Toy Set for Toddler & Kids Baby ToysExperience endless excitement with our Wooden Ball wheel tracker! The special thing about this roller conveyor is that a roller rolls down along the track. The child's little hands can gently push the roller and then watch tensely as it move rapidly down the path. Features & Benefits Safe And High Quality Material: Crafted from high quality wood with smooth edges, this toy is durable and safe. Made from odorless, non toxic materials, it ensures safety