Porter-Cable’s 1/4-in.Hex 4.3-Amp impact driver (PCE201) features a 4.3-amp motor and delivers 3,500 beats per minute (BPM). The metal gear housing helps dissipate heat build-up caused by the impacting mechanism. The impact driver delivers 1,450 in.-lbs. of max torque at 2,900 rpm. Other features include an electric brake, 1/4-in. hex chuck and external brushes for easy servicing.