Makita 12.7mm (1/2″) 320 N·m (236 ft·lb) Cordless Impact Wrench 40V max XGT® Li-Ion [Bare Tool] TW004GZ

Features:
• Increased motor speed under load delivers higher torque than DTW300 and DTW301
• Electronic 4 stage impact power selection for added versatility
• 3 modes of reaction time for automatic stop available both in forward and reverse rotation modes
• Trigger switch with full speed mode allows for less hand and finger fatigue
• Compact design with a short overall length of 144 mm
• Constant speed control maintains fastening torque by minimizing the rotation speed reduction caused by decreased battery capacity
• Style of socket retention: C ring
• Reverse Rotation Auto Stop Mode stops after the bolt/nut loosened enough
• Twin LED lights with preglow and afterglow functions for better illumination
• Powered by 40Vmax XGT Li-Ion battery
• BL motor delivers 350 N·m (260 ft.lbs.) of max torque and 630 N∙m (465 ft.lbs.) of nut-busting torque
• BL motor is electronically controlled to optimize battery energy use for longer run time per charge
• BL motor eliminates carbon brushes, enabling the BL motor to run cooler and more efficiently for longer life
• Excellent performance in continuous heavy duty applications
• Ergonomically designed handle with rubberized soft grip
• XPT (eXtreme Protection Technology); For use in outdoor applications or harsh environments, protection from dust and dripping water is enhanced
• Electric brake stops the rotation gently but fast, allowing user to quickly resume operation
• Reversing switch is conveniently located
• Phosphorescent bumper glows blue in dark places. Durable, reversible belt clip convenient for temporary tool hanging. Battery protection circuit protects against overloading, over-discharging and over-heating

Standard Equipments:
Belt Clip

Specifications:
Fastening capacities: standard bolt: m10 – m20 (3/8 – 3/4″)
High strength bolt: m10 – m16 (3/8 – 5/8″)
Square drive: 12.7 mm (1/2″)
No load speed (rpm): max / hard / mid / soft: 0 – 3,200 / 2,600 / 1,800 / 1,000
Impacts per minute (ipm): max / hard / mid / soft: 0 – 4,000 / 3,400 / 2,600 / 1,800
Max fastening torque: 350 n·m (260 ft.Lbs.)
Nut-busting torque: 630 n·m (465 ft.Lbs.)
Max output: 520 w
Vibration level: impact tightening of fasteners of the maximum capacity of the tool: 16.5 m/s²
Vibration k factor: impact tightening of fasteners of the maximum capacity of the tool: 1.5 m/s²
Sound pressure level: 99 db(a)
Sound power level: 110 db(a)
Noise k factor: 3 db(a)
Dimensions (l x w x h): w/ bl4020 / bl4025: 144 x 86 x 248 mm (5-5/8 x 3-3/8 x 9-3/4″)
W/ bl4040: 144 x 86 x 253 mm (5-5/8 x 3-3/8 x 10″)
Net weight: 1.9 – 2.2 kg (4.2 – 4.9 lbs.)