Patent ID: 7434495

Claim:
A hand tool comprising: a first part having a head and a shank connected to the head, a plurality of first holes defined in an outer periphery of the shank and each first hole receiving a first stop and a first spring therein which keeps a part of the first stop to extend out from the first hole, a second hole defined in the outer periphery of the shank and located at an axis different from an axis of the first holes, a second stop and a second spring received in the second hole, a part of the second stop extending out from the second hole; a second part movably mounted to the shank and having a positioning hole and a third hole defined through a wall of the second part, one of the first stops removably engaged with the positioning hole, the second stop slidably engaged with a groove defined in an inner periphery of the second part, the third hole communicating with the groove and a third stop engaged with the third hole so as to stop the second stop, and a third part including a sleeve and a button, the sleeve having a passage defined axially therethrough and mounted to the second part, a control hole defined through a wall of the sleeve and located in alignment with the positioning hole, the button movably engaged with the control hole and pushing the first stop to disengage from the first hole to allow the second part and the third part to slide relative to the shank.