Choose The Hammer Drill With Power and Speed Controls For Unmatched Versatility. The Adaptable 1/2 In. Dual-Speed Hammer Drill Features An 8.5 Amp Motor That Provides Overload Protection, Even When Drilling 3/4 In. Holes In Concrete. Choose Controls In Two Ranges: 0-1, 000 RPM/0-16, 000 BPM or 0-2, 500 RPM/0-40, 000. It’S Versatile Enough to Drill In Wood With Flat Boring Bits, Hole Saws, Auger Bits and Selfeed Bits – or Drill In Steel With Twist Bits and In Concrete With Percussion Bits. The Removable Side