Product: This is a pillow shaped conductor, an essential piece of physical experiment equipment, suitable for middle school teaching and demonstrations Material: Made of sturdy metal, this pillow shaped conductor ensures long-last use and high performance in all your experiments Product Size: With dimensions of 8cmx8.5cmx16.8cm, this pillow shaped conductor is compact yet effective, making it easy to handle during experiments while providing correct results Versatile: This pillow-shaped conductor is not only suitable for educational purposes but also ideal for various physics experiments, making it a versatile addition to your lab equipment collection Wide Application: Great for home, school class use, enjoy the DIY experiments fun while learning basic physical science knowledge Specification: Material: Metal Size Chart: 8cmx8.5cmx16.8cm/3.15inchx3.35inchx6.61inch Package Includes: 1 PairPillow Shaped Conductors Note: Please allow slightly errors 1-2cm differences due to manual measurement.