Grippies Shakers bring kinetic energy and sound exploration to the award-winning toddler STEM platform, Grippies! Connect the two-sized, magnetic rods to each other or combine them with the overmolded metal ball connectors to create a uniquely soothing acoustic building experience. Toddlers can watch the sensory beads rattle their way down the magnetic rods through clear ABS plastic windows. The Grippies Shakers building sets are perfect for toddlers to exercise their auditory, fine and gross motor and engineering skills. To care for Grippies, simply wipe clean with a damp cloth and mild soap and allow to air dry completely before continued use. To prevent damage, do not completely submerge in water or put any Grippies pieces in a dishwasher or washing machine unit. Available in 20 or 30 piece sets. Age 18 months+