Main feature: a.Double-bending techniques, 5mm steel board-made column ensures handling tires in high intensity. b.The pedal has step function, which can install the fire accurately and time saving c.IT model with the quick inflation device improves the inflation efficiency. d.The two helpers, can handle the low-profile, stiff tire within the range of the technical data, and other helpers are optional for the machine. e. Horizontal arm is equipped with the horizontal lock cylinder, the lock of which is better.