Knipex 4521200 Special Rings Retaining Ring Pliers 8-Inch For retaining rings from 12.0 mm in diameter. For securing the drive shaft in the gearbox of a motor vehicle. Minimum ring split gap of the rings 2.2 mm. Angled jaws with centering hole. High-grade special tool steel, forged, oil-hardened. Plastic coated handles.