Cordless Hammer Drill of Panasonic EY6432GQKW. This model is longer than 3.5 Amp Ni-MH in the field, compared to other tools 18 volts. Drill weighs only 4.8 kg, but provides a 390 w / kg. couple. Max torque (w-lbs.): 390, V: 15.6, Chuck Size (inches): 1 / 2, Chuck: Yes, Clutch Settings: 18, Reversible: Yes, Variable Speed: Yes, Side Handle: No , Battery Amp / Hour: 3.5Ah, Battery Included: Yes, (2) 3.5Ah Ni-MH: Yes, the charger 55-minute case: Yes, Tool Weight (kg): 4.8, mark Panasonic Compact light weight, durable, two speed ranges (0-400/0-1, 300 rpm), 390 inch pounds of torque, and electronic drilling brake15.6 V Ni-MH 1/2-inch / kit Support chuck Includes driver / driver, 2 batteries, 1 hour charger, and external hard plastic case plastic transport case durable and soft-pad cushion9 cm long, 4.4 kg 1 year warranty ..