BKnipex 4921A01 External Angled Precision Retaining Ring Pliers 5.2-Inch ReviewbP PP Knipex 4921A01 External Angled Precision Retaining Ring Pliers 5.2-Inch PLarge contact faces on the tips: no distortion of circlips, easy fitting.PFor rings 3 - 10 mm in diameter.PSturdy, inserted tips: made from high density drawn spring wire.PForged from chrome vanadium electric steel and designed to minimize tip breakage, and offer extended tool life.PPlastic coated handles.