Steam Boat Science Kit, Steamship Learning Toy, Experiment Toy Steamship, 4 Set for Boys Science Lab Specification: Item Type: Steam Boat Science KitAssembly Size: Approx. 140 x 70mm / 5.5 x 2.8in Applicable Age: Over 5 years old Ability Development: Intellectual development Experiment Type: Department of Physics Features: Durable, DIY assembly, educational toysWeight: Approx. 130 g / 4.6 oz Package List: 4 x Board 4 x Candle 4 x Bottle 4 x Bottle 4 x Straw 4 x Heat Shrink Tube 4 x Steam Boat Note: 1. Please allow 0‑2 cm error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.