The Knipex 4421J41 is a high-quality internal retaining ring pliers designed for installing and removing internal circlips on shafts with a diameter range of 19-60 mm. These pliers feature straight, precision-machined tips made from chrome vanadium electric steel, ensuring durability and reliable performance. The tips are non-slip and provide secure gripping of retaining rings. The pliers are oil-hardened and tempered, with a grey atramentized finish for corrosion resistance. The handles are plastic-coated for comfortable and secure handling, making them suitable for continuous use in professional settings.