单头铃-培铃 Single sided bearing diabolo

单头铃如同陀螺原理，可以玩各种特殊动作如打陀螺/直立铃等等，有特别表演效果。拥有培铃轴承，更容易操作。

此款扯铃两边重量不一致，故此运转时会一直旋转方向，
可参考YouTube 搜寻“单头铃” 教学视频。

Single sided diabolo plays like spinning top, unlike ordinary diabolo tricks, it can be used as special performance trick. Easy to use as it has bearing axle.