Conduit Fitting and Reaming Screwdriver for 1/2-Inch, 3/4-Inch, and 1-Inch Thin-Wall Conduit Klein Tools 85191 Hooded-blade design keeps tip from slipping out of screws, especially when tightening hard-to-reach conduit fittings; thicker hood is designed for rugged use Reams and smooths 1/2-Inch (13 mm), 3/4-Inch (19 mm), and 1-Inch (25 mm) thin-wall conduit ends to protect wire and permit correct installation of fittings Reams both the inside and outside of the conduit at the same time Longer Cushion-Grip handle provides comfort and more torque for reaming Replaceable reaming blade is now held in place with a 1/16-Inch hex socket set screw