Makita 12.7mm (1/2″) Impact Wrench | Model : M-6905B

Features : 

Tough worker for fast running of nuts, bolts (Max fastening torque: 294 N·m [217 ft.lbs.])
Aluminum hammer case with high durability
Convenient rocker type switch for forward and reverse operation
Precision machined gears for long life and production usage
Heavy duty front rubber bumper
2,000 impacts per minute for maximum efficiency

Specifications : 

Model : M-6905B
Capacity 

Standard bolt : M12 – M20 (1/2″ – 3/4″)
High Strength bolt : M12 – M16 (1/2″ – 5/8″)
Square drive : 12.7 mm (1/2″)

Continuous rating input : 440 W 
No load Speed : 1700 rpm 
Impacts per minute : 2000 ipm
Max fastening torque : 294N.m (220ft.lbs)
Overall length : 270 mm (10-5/8″)
Net Weight : 2.8 kg (6.2lbs)
Power Supply Cord : 2.5m (8.2ft)