The Key (OEM Part No. 3128312577) is a mechanical spare component compatible with Boomer 281,  and Boomer-282 underground drilling rigs. Manufactured from durable alloy steel, it is designed for the feed assembly drive connection position. The key provides secure torque transmission and accurate positioning between connected mechanical components, ensuring reliable power transfer within the feed system. Its strong construction delivers excellent strength, precise fitting, and long service life under demanding mining conditions. This OEM replacement key helps maintain mechanical connection stability and efficient equipment operation.