Description: 【Product Type】: This is a Centrifugal Locus Model (J21034), an ideal educational tool for teaching inertia concepts, good for both classroom and home use. 【Material】: Centrifugal force experimental apparatus teaching instrument made from metal, this model is designed to withstand repeated use while maintaining its structure integrity. 【Product Dimensions】: Centrifugal force experimental with dimensions of 12x30.5x33cm, this model is compact enough to fit on a desk or table, making it convenient for demonstrations and experiments. 【Package Contents】: Each package contains a complete set of the Centrifugal Locus Model (J21034), ready to be assembled and used. 【Unique Design】: This model not only serves as an effective teaching tool but also mimics the design of a roller coaster, adding an element of fun and interest to learning sessions. Specification: Material: Metal Size Chart: 12cmx30.5cmx33cm/4.72inchx12.01inchx12.99inch Package Includes: 1 Centrifugal Force Experimental Model Note: Please allow slightly errors 1-2cm differences due to manual measurement.