Small World Toys Sand & Water - Water Wheel The Water Wheel from the Small World Toys Sand and Water collection makes water play super fun and interesting Children become fascinated when they pour a stream of water into the colorful, translucent cups and watch the wheel begin to spin Playing with the water wheel helps children develop hand-eye coordination and understand cause and effect - plus it's super fun Measures 4.25''W x 3.5''D x 6.5''H; for ages 18 months and up For 50 years, Small World Toys has delivered fun, safe, innovative and endearing products for children of all ages