Factory-Reconditioned Milwaukee 5371-8 5.5 Amp 1/2-Inch Magnum Heavy-Duty Hammer Drill Kit Reconditioned Milwaukee Products have a five-year warranty through the Milwaukee factory or an authorized service center 5-1/2 amp, 2,500 rpm, 50,000 bpm Reversing trigger speed control Removable brush cartridge system All ball and roller bearings