Knipex 4911A1 External Straight Precision Retaining Ring Pliers 5.5-Inch Large contact faces on the tips: no distortion of circlips, easy fitting. For rings 10 - 25 mm in diameter. Sturdy, inserted tips: made from high density drawn spring wire. Forged from chrome vanadium electric steel and designed to minimize tip breakage, and offer extended tool life. Plastic coated handles.