This rotation head pin is manufactured as a compatible replacement for OEM part number 0666800024 and is intended for use in underground drilling equipment. Made from hardened steel, it offers excellent mechanical strength and wear resistance under high torque conditions. Installed in the rotation head assembly, the pin supports smooth rotation and structural stability. It is suitable for M4C rigs, M40S, Simba H1354, SIMBA H1254, E70 platforms, and M4C ITH drilling equipment.