A tool that temporarily expands the frame, such as removing the hub stuck to the frame and replacing the tires and tubes with the wheels attached to the frame.
Since the attachment moves according to the angle of the frame, it will not slip or be scratched even on a steep angle frame.
Since the handle is semi-fixed, you can remove the handle and use a 14mm socket wrench for continuous work.
Note: Do not use on aluminum frames, electric vehicles, belt vehicles, or bicycles with external derailleurs. Also, do not use it on bicycles with short chain stays such as small wheel bikes. The frame may be damaged.
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