Material: 3D Printer Aviation Engine Model is made from quality PLA material, is sturdy and durability, has a long service timeMechanical Learning Tool: The 3D Printer Aviation Engine Model is a great educational tool for understanding the inner workings of an aircraft engine, practical and professionalAviation Engine Model : This Aviation engine model is a detailed of a turbofan engine, great for model aviation enthusiasts. This model is can electric and provides a realistic of the workings of the engine3D Printer Model: The model was made using a 3D printer, with accurate details and high precision (Required 2x AA batteries, Not Included)Ideal Gift: This detailed engine model makes a nice gift for aviation enthusiasts or interested in mechanical models Specification: Material: PLA Size Chart: 21 cm x 11 cm x 12 cm/8.27 inch x 4.33 inch x 4.72 inch Package Includes: 1x3D Printer Aviation Engine Model Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.