3D Printing Automobile Open Differential Dynamic Demonstration Model with Differential Lock Compatible with LEGO

Features:
- This model is equipped with a 1.5V battery box (battery is not included) and motor.
- The model is made of PLA plastic and processed through 3D printing.
- The model is an open differential with a mechanical toothed differential lock.
- The transmission shaft is compatible with LEGO.
- The main reduction gear and planetary gear set are both spiral bevel gears.
- There are metal bearings and shaft sleeves inside, which have higher durability.
- Gears are lubricated with butter to reduce friction.

Package Included:
- 1 x Finished Differential