1. The cylinder has a two-way buffer to effectively absorb shock and vibration
2. The grapple with 360° rotation, which increased the working efficiency by 30%
3. Imported resistant modules ensure frequent extension and contraction and reduce wear
4. Pendulum rotary grapple is more flexible and durable
5. The swing amplitude of the rotating clamp with damping can be adjusted arbitrarily
6. arm could be added 2 meters, which makes the stretching distance longer