This rotation head pin is designed as a compatible replacement for OEM part number 0666600056. Manufactured from hardened steel, it provides high resistance to wear, impact, and fatigue during continuous drilling operations. Installed in the rotation head assembly, the pin ensures accurate alignment and reliable torque transfer. It is suitable for a wide range of equipment including M4C rigs, M40S, Simba E7C, M4C ITH, and E70 drilling platforms used in underground and surface mining applications.