1. Small size, light weight, convenient operation, can be used by one person.

2. Saw tooth chain fixing system to improve the adjustability of the chain.

3. The support frame and lifting support frame can assist in shaping the parts to be repaired and facilitate maintenance.

4. Simple shape, especially practical for small shape repair.

5. Convenient and efficient system for minor shape recover.

6. Meeting the need of repair of parts covering the car.

7. The pulling force is balanced, easy and labor-saving.

8. Long stretching stroke, wide repair area, downward pulling is possible.

9. It is not limited by air source pipeline. It does not need external power air source.