What is the role of the truck crane legs?
and increase the contact area with the ground, reduce the pressure if not such a crane in the lifting of the weight when it is easy to puncture,
The leg is the key to the crane. No matter what action you do, you have to play the leg first. This will make your car roll or puncture
Decentralized pressure, the bottom of the pressure! General under the legs also pad large sleepers,
