The Milwaukee M12 FUEL 1/4" Straight Die Grinder 2 Battery Kit (2486-22) is designed to replace pneumatic die grinders. The die grinder provides you with up to .3 HP performance to outperform pneumatic die grinders by 20%. The M12™ inline die grinder features 3-Mode speed control and a responsive variable-speed trigger giving you unmatched control with your most common accessories. The cordless die grinder provides you with greater access and mobility, eliminating the frustrations of hoses and compressors. In addition to the tool, this kit includes two M12™ REDLITHIUM™ 2.0 batteries.