2 years & up. Enhance the possibilities for scientific discovery by adding authentic, easy-to-use test tubes to your classroom. Complete with a convenient stand, this set of jumbo test tubes are durable, and easy to clean, making them perfect for little hands in classroom settings. Children will have fun experimenting and exploring while using different liquids, or even engaging in dramatic play. Stand measures 7.1"L x 3.4"W x 2.7"H. Each tube measures 4.75" long. Includes 3 test tubes and stand.