Bosch (Blue) 18V to Milwaukee 18V Battery AdapterThe Bosch 18V (Blue) to Milwaukee 18V (M18) Battery Adapter lets you put the batteries you already own to work across more tools. Snap your Bosch 18V packs onto your Milwaukee M18 and M18 Fuel tools for a secure, reliable power connection without buying a separate battery system. Built with a tough ABS shell and nickel plated copper contacts, it delivers consistent current and a snug fit so you can focus on the jobnot your power source. Key Features