The MILWAUKEE® M12 FUEL™ 1/4" Straight Die Grinder is designed to replace pneumatic die grinders. The die grinder delivers up to .3 HP performance to outperform pneumatic die grinders by 20%. The M12™ inline die grinder has 3-Mode RPM control and a responsive variable-speed trigger providing unmatched control with most common accessories. The cordless die grinder provides greater access and mobility, eliminating the frustrations of hoses and compressors.