The Makita 2-Piece Combo Kit features rugged construction and ergonomic design. The HR2475 1 in. rotary hammer has a soft-grip D-handle for increased comfort and control. It delivers up to 4,500 BPM in 3 different hammering and rotating modes. The 4-1/2 in. grinder features a 7.5 -amp motor housed to protect it from filings and other debris.