Irwin 3046006 Drill Bit, 1-1/4 in Dia, 5 in OAL, 3-Flute, 7/16 in Dia Shank, Hex Shank

Feed screws has a coarse thread for fast boring. Spurs on the outside diameter cut holes clearly and accurately, 7/16 in quick-change impact shank for use in applications such as large diameter holes in wood for pipe, conduit. Each bit is packaged with one hex key and two feed screws.