| 摘要 |
A training device for boxing is formed of a base, an expandable support rod, and a spherical body. The expandable support rod is formed of at least one adjusting member, a lower tubular member, and an upper tubular member which is slidably received in the lower tubular member in conjunction with the adjusting member such that the upper tubular member is located by a seat tube and an upper lock ring of the adjusting member, and such that the lower tubular member is positioned by the seat tube and a lower lock ring of the adjusting member.
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