| 摘要 |
A method, system, and apparatus, the apparatus including, in some embodiments, a first elongate member having a resilient front surface, a first clamp located at a first end of the first elongate member, a second elongate member coupled to and adjustably engaged with said first elongate member, the second elongate member having a resilient front surface, a second clamp located at a first end of the second elongate member, a magnetic material connected to a rear surface of the first elongate member and the second elongate member, and a lock mechanism integrated into at least one of the first and the second elongate members to selectively secure a relative position of the coupled and adjustably engaged first and second elongate members.
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