The Arm (OEM Part No. 3128242708) is a wear part compatible with Epiroc rock drills including F9-11, ROC-D7-11, ROC-D9, and S7D models. Constructed from high-strength alloy steel, it is designed for use within the drill feed or support system at pivoting or load-bearing arm positions. The arm provides structural support, ensures precise movement, and transfers mechanical loads effectively during drilling operations. Its durable, wear-resistant design delivers long-lasting performance under heavy-duty conditions, helping maintain equipment stability, mechanical alignment, and consistent operational efficiency in underground mining and tunneling applications.