OEM‑compatible Spacer (3128062100) for Boomer T1D, Boomer 291, Boomer 281, Boomer 282, COP MD20, and Boomer S1D underground drilling equipment. Made from hardened steel, this aftermarket spare part is part of the rotation head assembly, ensuring durable and reliable operation in mining and tunneling applications. Its robust construction extends service life and enhances performance in demanding underground environments.