Colorful Office Thinking Hand Boiler, Glass Science Energy Transfer, Children Science Experiment, Love Birds Color Meter Hand Boiler, 4 Pcs (Red&GreenBlue&Purple) By C&H Great Graduation Gift, Science Experiment. Valentine's Day Couples Love Meter. Glass Sciences Energy Transfer.Office Thinking Hand Boiler. Photos for display only, per order only four items(Colors are Red,Green,Blue&Purple) Shape may vary. Dimensions:8x7x2 2oz Safty Hard Box.