This rotation head pin is produced as a compatible replacement for OEM part number 0663615000 and is designed for use in underground drilling equipment. Manufactured from hardened steel, it delivers excellent wear resistance, structural strength, and long service life under high mechanical stress. The pin supports smooth rotation and reliable load transfer within the rotation head assembly. It is suitable for M4C platforms, Simba E7C, Simba H1354, SIMBA H1254, and COP-3060 series rock drills.