Drillco Hand Reamer, Imperial, Series: 4400E, 1 in Diameter, 10-7/8 in Overall Length, Straight/Square Shank, Straight Flute, 5-7/16 in Flute Length, HSS, Bright/Black.Hand reamers are widely used for final sizing of drilled holes. The square on the shank end is suitable for holding in a tap wrench or vise. The cutting edge is ground with a starting taper to provide easy entry. The helical reamer is preferred where there is an interruption to the cut, such as a keyway. Drillco 440E164 4400E Imperial Hand Reamer, 1 in dia x 10-7/8 in OAL, Straight/Square Shank, Straight Flute