Hammer Drill Chuck Size 1/2 in Number of Speed Settings 2 Drilling Capacity in Concrete 7/8 in Drilling Capacity in Wood 1 5/8 in Blows per Minute 0 to 15 300 0 to 51 000 Maximum Blows per Minute 15 300 bpm 51 000 bpm Minimum Blows per Minute 15 000 bpm Current 9.2 A Chuck Style Keyed Voltage 120V AC Clutch Style Slip Clutch Drill Chuck Type Keyed Drilling Capacity in Masonry 1 in Drilling Capacity in Steel 5/8 in Handle Grip Material Rubber Handle Type Pistol Grip