A pair of pliers includes two parts pivotably connected to each other. The two parts respectively have jaws located correspondingly. A control member has one end pivotably connected to one part and an operation rod is pivotably connected to the other part and has one end movably inserted into the control member. A control lever has a first hole through which the operation rod extends. The operation rod has a first engaging portion which is engaged with a second engaging portion of the control lever. A resilient member is in contact with the control lever to engage the second engaging portion with the first engaging portion to set a desired angle between the two parts.