․Rotating the steering disc to make it move up-down for quickly operation and labor-saving. Besides, it won't leak oil like hydraulic type.
․Special designed the upper jaws to adjust up-down and front-back direction for fixing the spring tightl
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․Rotating the steering disc to make it move up-down for quickly operation and labor-saving. Besides, it won't leak oil like hydraulic type.
․Special designed the upper jaws to adjust up-down and front-back direction for fixing the spring tightl
