Description <br> Features: This Optical Physics Sciences Experiment Set combines ABS and plastic construction with hands on assembly to demonstrate light refraction principles. <br> Featuring modular components for configurations, the educational toolkit encourages creative problem solving and fine motor skill development in children. <br> Ideal for interactive toy and optical physics props, the science demonstration set serves both homeschooling environments and classroom physics laboratories. <br> Perfect for science projects or family, these experiment set transforms complex optical theories into tangible learning experiences. <br> Allowing repeated use across multiple physics curriculum units and experimental scenarios. <br> <br> Specifications: Materials: ABS+Plastic <br> Color: As The Picture Shows <br> Package Weight: approx.90g <br> Styles Optional: <br> 2 Styles are Available as Shown in the Picture. <br> Height: approx.170mm/6.69in <br> <br> Package Includes: 1 x Spacetime Tunnel Construction Set <br> <br> note: Please allow 1-3mm error due to manual measurement. Please make sure you do not mind before you bid. <br> Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks! <br>