Powerful 10.5A motor delivers 450 rpm (revolutions per minute) and 3000 ipm (impacts per minute). Powerful hammer mechanism delivers 5.5 ft/lb (foot-pounds) of impact energy for drilling in hard aggregate. Constant Power Technology delivers consistent performance in tough applications. Mechanical clutch protects the tool when the bit binds up. 2-mode operation features rotary hammer and hammer only for maximum versatility. 12-position chipping adjustment allows the user to maintain the desired hammer position while chipping in any orientation. 3-wire, 13' cord. Includes side handle and carrying case. No. 5316-21: Chuck Size: 1-9/16 In., Chuck Type: Keyless, Amperage: 10.5A, No Load Speed: 0-450 rpm, Impacts per Minute: 0-3000 IPM, Case Included: No, Weight: 15 Lb., Dimensions: 17-3/4 In., Cord Length: 13 Ft., Warranty: 5 Year, Pkg Qty: 1, Package Type: Box