The Milwaukee 5359-21 is a corded electric tool specifically designed for drilling and chiseling concrete with a 7.4A motor generating 800W of power at 980 RPM. This page contains repair and additional information about this 1-1/8-Inch SDS Drive L-Shape Rotary Hammer, its three operating modes, rear D-style handle for control, two-finger variable speed trigger, depth gauge, and side handle.