Admittedly, we’ve had poor results with Craftsman’s other 4.8V offerings. But maybe the impact version overcomes the others’ puny torque output. Regardless, you can try one out for just $20. Craftsman claims that with impact action this one can deliver 175 in-lbs of torque at up to 1,800 rpm. It’s got a two-position handle and quick connect bit holder.
Craftsman Impact Driver [Sears]