| 摘要 |
A hand tool, including a shank having a proximal end joined to an operational head, the shank including an elongated groove with corresponding ends adjacent the proximal end and a distal end of the shank; a slidably sleeve sized to receive the shank, the sleeve defining a set aperture; a set disposed in the set aperture and positioned to bias into the elongated groove, the set preventing sliding between the shank and sleeve when tightened and the set allowing sliding between the shank and the sleeve when loosened; and a selective lock relating between the sleeve and the shank, the lock preventing separation of the sleeve and the shank when the sleeve and shank are in rotational alignment, the lock allowing separation of the sleeve and the shank when the sleeve and shank are out of rotational alignment.
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