3D Printed Model Differential Mechanism Differential Lock Structure Principle Model Teaching Aids

Features:
- 3D printed differential and differential lock structure model
- Can be used for ornaments, principle teaching
- Built-in four bearings, smooth and durable
- Voltage 3V

Package Included:
- 1 x Set of 3D Printed Model

Note:
- Due to 3D printing technology, the surface may not be beautiful, with small cracks, etc., which will not affect the use. Please make sure that you don't mind before purchasing.
- Cannot be used in actual mechanical structure.
- It is recommended to use 2pcs AA batteries which are not included in the package.