Klein Tools 32759 Power Nut Driver Set, 3-Pack Power Tools Uses 3 AA batteries

Uses 3 AA batteries

and ripstop nylon

but the multiple grooves provide less surface area therefore less friction in crowded conduit

Rugged and dependable heavy-duty cast iron pump with powder coat finish

Klein Tools 32759 Power Nut Driver Set, 3-Pack Power Tools Uses 3 AA batteriesKlein Tools 32759 Power Nut Driver Set, 3 Pack These hollow shaft magnetic nut drivers are designed for long bolts, studs or threaded rod jobs. The magnetic head holds nuts and bolts to aid in hard to reach installations. The wrench assist end is designed for high torque loosening found in many jobs. Available in three hex sizes to fit most application needs. Set contains 1 4 Inch, 5 16 Inch and 3 8 Inch hex sizes Hollow Shaft Magnetic Nut Drivers