The Makita 3/4 in. 2-Speed Hammer Drill has variable-speed operation to help with starting holes in concrete and steel. Start with low gear for speeds up to 900 RPM and 18,000 BPM. Then switch to high to take advantage of up to 2,300 RPM and 46,000 BPM. The 1/2 in. keyed chuck is powered by a 6 Amp motor and ball bearings translate to years of dependable use. This hammer drill also has adjustable side handles and a depth gauge for drop-in anchors. It comes with a storage case.