The Klein Tools Conduit-Fitting and Reaming Screwdriver can ream and smooth 1/2 In., 3/4 In., and 1 In. thin-wall conduit. It features a hooded-blade design that keeps the screwdriver tip from slipping out of screws, which is especially handy when tightening hard-to-reach conduit fittings. This screwdriver has a longer Cushion-Grip handle for even more comfort and torque while reaming.