JCB series bucket teeth. hardness 48-52 HRC, impact toughness >18 J/cm2, We have 53103205, 53103208, 53103209, 332/C4388, 332/C4389, 332/C4390 and fited Bolt and Nut. Very wear resistant. Suitable for mining operations, reduce the number of manual replacement. Materials and processes developed by oneself. own test center and R & D team. Product Performance Leading World. If there is a need or intention to cooperate, please contact foreverget@nfcompany.com directly. We can also design drawings and materials for you if you need anything.