Features: This physics resistor kits not only serves as excellent educational tool but also fosters teamwork and problem solving skills. Science experiment kits can improve kids hand eye cooperation, intelligence development, hands and brain ability. Physics resistor kits helps develop critical thinking skills and problem-solving abilities. Learning more about science technology and physics experiments by our experiment toy. Perfect for classrooms, after-school programs, summer camps, libraries, birthdays, and stem-loving families, fostering teamwork and collaborative learning. Specifications: Component: Plastic, Metal Size: about 7.2x1.5cm/2.83x0.59'' Package Includes: 1 Pc Fixed Resistance note: Please allow 1-3cm errors due to manual measurement. Due to the difference betweeen different monitors,the picture may not reflect the actual color of the item.