High performance with newly developed Brushless DC motor. Aluminum hammer case creates the impression of rigidity of the machine Dual LED lights with preglow / afterglow functions illuminate the work area No load speed : 0 - 3,400 Capacity : Machine screw : M4 - M8 (5/32" - 5/16"), Standard bolt : M5 - M16 (3/16" - 5/8"), High tensile bolt : M5 - M14 (3/16" - 9/16"), Coarse thread (in length): 22 - 125 mm (7/8" - 4-7/8"), Hex Shank : 6.35 mm (1/4") Max. fastening torque : 170 N?m Impacts per minute : 0 - 3,600 Standard Equipment : Belt Clip Includes 2 Batteries (3Ah) / 1 Charger / Makpac Connector Case