- Compatible with 1.5 mm shaft motors and 0.4 module gear trains for micro RC, robotics, and model craft; supports DIY gearboxes and compact transmission upgrades.
- Precision brass spur gear: 0.4M pitch, 8 teeth, 4 mm face width, and 1.5 mm bore for smooth meshing, low noise, and stable power transfer.
- Model making and robotics: Enables torque reduction or speed changes for micro vehicles, servo mods, mechanical toys, and small prototypes.
- Repair and prototyping: Ideal for replacing worn pinions, building test rigs, and teaching gear principles; works with 0.4M kits for hobby labs, classrooms, and STEM tasks.
- Product Packaging: The product includes a total of 2pcs spur gears, which can completely meet your daily use needs and replacement requirements..