1. Entry/Exit Roller, more freely travel.
2. Turning around at an angle of 130 degree will not lead to any overturning.
3. Rocker arm assembly is made of 45# steel forging.
4. All joint pins are heat treated and coated with chromium or nickel.
5. Good looking & excellent appearance.
6. Both pumping piston and lifting piston have been tested against salt corrosion for 120 hours.
7. No deformation when under heavy loads for a long time.