Makita 1/2 in 18V Cordless Body Only Impact Wrench

Model DTW450 is a powerful but compact and lightweight cordless impact wrench powered by 18V/ 3.0Ah Li-ion battery, featuring Rubber joint construction for minimum battery failure. Highest-in-class fastening torque of 440N.m (325ft.lbs). Lightest-in-class at 3.4kg (7.5lbs).

4 pole motor.
Lithium-ion batteries have greater life spans than their Ni-MH or Ni-Cad counterparts giving 430% greater run time.
Lithium-ion's 40% weight saving means 18 volt power can be obtained by a battery that weighs the same as a 12 volt Ni-MH battery.
High comfort grips.
LED job light with afterglow.
Trigger is a forward and reverse rocker switch.
Shock absorbing battery housing.