Milwaukee Fixtec Adapter – M18 x 2.5 to M16 Thread Part No. A genuine Milwaukee accessory designed for fast, tool-free changes of diamond core bits. M18 x 2.5 (tool side) to M16 (core side). Fits Milwaukee DD2-160XE and other diamond core drills. Enables quick core bit changes without spanners or wrenches. Ideal for dry diamond drilling applications. Accepts standard SDS-plus drill bits. Perfect for professionals needing efficient, reliable core bit changes on-site.