Hitachi’s WH10DL 10.8-volt Lithium-Ion Micro Impact Driver weighs two pounds, is 5-1/2 inches long, and delivers 930 inch-pounds of torque. It’s ergonomically designed, with a 4-1/2 inch handle circumference. A ΒΌ-inch hex chuck makes for easy changes; it has a avariable speed trigger, and an LED illuminates the work surface when the trigger is partially depressed. It currently sells for $179.
