These colourful twisted eyedroppers make experimenting irresistible for toddlers. Kids squeeze the bulb and learn about the physical properties of water while building their hand muscles. Twisty Droppers come 4 to a set packed in a bucket. The droppers measure 6 in L and come in a variety of colours, with a handled storage bucket. Size: 15.2 x 10.2 x 10.2 cm. Ages 2+.