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This is a psuh/draw-bar box. Users can choose to push or pull the box according their preference and different situation. When it is pulled it saves more effort compared with the traditional draw-bar box. In fact,more people prefer push to pull. When the user choose to push it, he/she can also push it lightly.This psuh/draw-bar box ’s height is variable through the adjustable drawbar,so it can meet the demands of people with different height. The drawbar is comparatively wider so that it is more lightly to change direction or stop.Users can make rapid reaction awording to the road condition.