Impact Wrenches Put To the Test - Auto Express

Auto Express have published their review of eight impact wrenches. 'When choosing a wrench, you should consider the following: torque or twisting power (measured in lbs/ft or Nm); battery voltage and stamina (rated in amp hours - Ah) and hammer blows or impacts it can deliver in a minute (bpm/ipm). A spare battery is a sensible idea if you plan to use it for general car repairs, while a fast charger and tough case are essentials.'