Our universal joint are of high quality. From forging to assembly, we pay attention to good-looking appearance and exact machining via strict tolerance control. They are of eligible heat-treatment and perfect packaging. Features: 1, Product model:IsuzuPartsuniversal joint CZ-187 Material: 20Cr or 20CrMnTi 2, Skin hardnesses: 58-64HRC 3, Internal degree of hardness: 20Cr:25-45HRC 20CrMiTi:33-48HRC 4, Weight: Net 3850 g Gross 3960 g