With the Milwaukee 4932352172 fixtec extension adapter, you achieve fast, clean, and highly efficient dry diamond core drilling. This adapter bridges the connection between an M18 x 2.5 fixtec mount and standard 1 1/4" unc diamond core bits. Built with the integrated Clean Line Rotor system, it extracts drilling dust directly at the source during dry drilling. This active dust removal increases your drilling speed, keeps your work area visible, and significantly extends the working life of your diamond cores. Ideal for drilling penetrations in masonry, brick, and concrete. The fixtec connection lets you fit and swap core bits quickly by hand without extra tools.