Patent ID: 8402865

Claim:
A hand tool including: a handle including two ears extending from an end; a shank pivotally connected to the handle and formed with an insert placed between the ears, wherein the insert includes first and second recesses defined therein, a stop formed thereon, a first arched face formed between the stop and the first recess, and a second arched face formed near the second recess; and a locking unit operable for retaining the shank in a selected one of first and second angles relative to the handle, wherein the first angle is about 175° to 185° , wherein the second angle is about 115° to 145° , wherein the locking unit includes: a detent placed movably in the handle for insertion in a selected one of the first and second recesses; and a button including a square rod with shallow and deep recesses defined therein, wherein the button is placed movably in the handle between a locking position where the shallow recess receives the detent to keep the detent in a selected one of the first and second recesses and a releasing position where the deep recess receives the detent to allow movement of the detent out of any of the first and second recesses.