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.
3X cutting edges extends bit life compared to standard IRWIN self-feed bits
3X cutting edges extends bit life compared to standard IRWIN self-feed bits
Features aggressive screw pitch
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