每套产品包括：一只摩托车专用伸缩灯泡，一只高性能整流器，安装说明书，保修卡，安装支架，螺丝。
Each set includes: a BI-Exnon H4 Special for Motorcycle, a high-performance Ballast, installation manuals, warranty cards, mounting brackets, screws.
主架中部是正方形的，和内部的伸缩杆(正方形)相互配合，顶住螺丝防止其旋转。
The square-shaped middle part of the main frame is matched mutually with an internal telescoping rod (square) to hold the screws to prevent the screws from rotating.
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