Patent ID: 8051572

Claim:
A pair of pliers for removing a fastening ring, comprising: a pliers head comprising a left pliers head and a right pliers head, wherein a cutting edge of said left pliers head is blunt, and a cutting edge of said right pliers head is a blade, wherein a projecting element is extended from an upper portion of said cutting edge of said left pliers head; a pliers handle comprising a left pliers handle and a right pliers handle, wherein said left pliers head and said right pliers head are rotatablely connected to said left pliers handle and said right pliers handle respectively; an adjusting device provided at an upper portion of said left pliers handle and said right pliers handle, comprising: an adjusting nut; an adjusting dial fixed to a middle portion of said left pliers handle by said adjusting nut, wherein said adjusting dial has an irregular shape with a through hole for receiving said adjusting nut, and a side surface consisting of a first plane, a second plane and an arch, wherein said arch has two grooves thereon, and there is a retainer outside said two grooves; an adjusting screw provided on said right pliers handle, wherein said adjusting screw on said right pliers handle is fixed to said adjusting dial of said left pliers handle, and said adjusting screw is against one side of said adjusting dial; a retaining screw provided above said adjusting dial; and a spring provided in said retaining screw; and a cover provided at each of both sides of said pliers head via a head shaft.