Patent ID: 7497149

Claim:
A hand tool comprising: a first part having a head and a shank extending from the head, a switch device and a ratchet mechanism received in the head, a positioning hole and a receiving hole defined in the shank and located on two parallel axes of the shank, a first end of a block received in the positioning hole and a positioning unit received in the receiving hole, the positioning unit including a bead, and a second part movably mounted to the shank and having a longitudinal slot with which a second end of the block is movably engaged, two positioning notches defined in the second part and the bead being removably engaged with one of the positioning notches, a first recess, a second recess and a third recess defined in communication with the slot, an angle defined between an axis of the third recess and an axis of the slot such that a distal inner end of the third recess is located beyond a distal end of the slot in a longitudinal direction of the slot.