Southwire Tools & Equipment ND1/2-3 1/2-Inch Comfort Grip Hollow-Shaft Nut Driver with 3-Inch Shank Get to those hard to reach nuts/bolts with our 1/2" nut driver. The 3" shaft fits over long bolts and studs for most applications Hollow 3" shaft for additional screw clearance Integral flanges provide a solid, twist-resistant blade anchor Chrome-plated shank is corrosion resistant Comfortable cushioned grip allows firm grip and greater torque