The Arm (OEM Part No. 3128309734) is a spare part compatible with M4C, Simba E7C, Simba H1354, SIMBA H1254, and M4C ITH underground drilling rigs. Manufactured from high-strength alloy steel, it is designed as a structural component for the arm assembly position in hydraulic and mechanical linkage support systems. The arm provides reliable support, connection, and movement control for drilling equipment mechanisms, ensuring accurate positioning and stable operation. Its durable alloy steel construction offers excellent strength, load resistance, and long service life in demanding underground mining and tunneling environments. This OEM replacement arm supports dependable equipment performance.