1/2" Capacity Non-Reversible Heavy-Duty Drills. Heavy-duty drill built to take the punishment of continuous production use. Rugged design assures the best possible drilling performance. Smooth operation allows for accurate drilling, reaming and tapping. Adjustable handle included. NRD-12PA equipped with Jacobs 34-06 heavy-duty chuck. NRD-12PAT equipped with Jacobs 33BA-1/2 heavy-duty chuck.