1. Material of the wheel: TPR/Rubber/PU;
2. Type: Light/middle/heavy,applied to every field
3. Direction: Universal rotation(With brake)/fixed,could control easy
4. Axle: Single/double,provide two-ways chioce
5. Size of the wheel: 2", 3", 4", 5",6”; then they have diffierent capacity
6. Color of the wheel: Dark red, gray, coffee, black;
7. Capacity: 10kg-300kg;
