Impact Hammer Drill Product Type Impact Hammer Drill Chuck Style SDS Plus Maximum Speed 1 100 RPM Drilling Capacity in Concrete 3/4 in Drilling Capacity in Wood 1 1/16 in Pressure Port 3/4 in - 16 SAE O-Ring Thread Return Port 3/4 in - 16 SAE O-Ring Thread Minimum Operating Pressure 1 000 psi Maximum Operating Pressure 2 000 psi Minimum Flow Rate 5 gpm Maximum Flow Rate 10 gpm Minimum Blows per Minute 3 400 bpm Drilling Capacity in Steel 1/2 in Drilling Capacity in Masonry 3/4 in