100 PCS Four-Blade Propeller Technology Made Toy Accessories, Random Color Delivery

1. Material: plastic
2. Process: injection
3. Smooth corners, no injury to hands
4. Product category: toy accessories
5. Diameter: about 57mm
6. Inner hole: 1.95mm (tightly fit 2mm shaft)
7. Matching: axles, motors and other materials, making wind toy models, scientific experiments, etc.
8. Weight: about 2g