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1·The wrapper arm with the fulcrum shaft in coilers must be fitted firmly to feedback precisely the angle movement of the wrapper arm.

为准确反馈卷取机助卷辊支臂角位移，支臂与轴必须牢固联接。

2·With fulcrum at end of shaft , the center of gravity is changed and clubhead feels much heavier.

由于支点的杆柄末端，重心的改变使杆头感觉更重。