Patent ID: 7497150

Claim:
A pair of pliers comprising: a first body having a handle and a shank formed respectively at two ends of the first body; a second body pivotally connected with the first body and having a handle and a shank formed respectively at two ends of the second body; a pair of heads detachably attached respectively to the shanks of the first and second bodies; and two connection devices mounted between the heads and the shanks to detachably connect the heads to the shanks, and each connecting device comprising a connecting block formed on one of the heads and shanks; and a connecting loop formed on a corresponding one of the heads and shanks and securely and detachably mounted around the connecting block, wherein each connecting loop is formed from a tab having two ends connected with each other; one of the ends of the tab of each connecting loop has an engaging tag, and the other end of the tab of the connecting loop has an engaging recess engaging the engaging tag; and the engaging tag and engaging recess of the tab of each connecting loop are dovetail-shaped.