This rotation head pin is manufactured as a compatible replacement for OEM part number 0661154700 and is used in the rotation head assembly of underground drilling equipment. Produced from hardened steel, it offers excellent mechanical strength, wear resistance, and reliability under continuous drilling loads. The pin supports secure component connection and consistent rotational performance. It is suitable for drilling rigs including M4C, Simba H1354, and Simba H1254, where durability and operational stability are critical.