The Holder Set (OEM Part No. 3128310457) is a mechanical spare component compatible with the Simba H1354 underground drilling rig. Manufactured from durable alloy steel, it is designed for the rock drill assembly holder assembly position. The holder set provides secure support and positioning for related drilling components, ensuring stable operation during underground drilling processes. Its robust construction delivers accurate fitting, high mechanical strength, and long service life under demanding mining conditions. This OEM replacement holder set helps maintain drilling assembly reliability and supports efficient equipment performance.