Milwaukee M12 Fuel Right Angle Die Grinder 2 Battery Kit The M12 Fuel right angle die grinder is the first cordless right angle die grinder that delivers the size and performance professional service mechanics demand. This tool offers up to .3 Hp performance, best-in-class size to help fit in tight places, and offers greater mobility and access. A 4-mode Rpm control and responsive variable speed trigger allow users unmatched control.