Constructed of M-42 8% cobalt high speed steel for super abrasive resistance in tough metalsHeavy-duty spiral flute design produces faster chip ejectionShorter cutting tips reduce torque for drilling in high tensile strength materials135-degree split...

3X Cutting edges extends bit life compared to standard IRWIN self-feed bitsAggressive Screw Pitch7/16 in Quick Change Impact Shank

3X Cutting edges extends bit life compared to standard IRWIN self-feed bitsAggressive Screw Pitch7/16 in Quick Change Impact Shank

For drilling large diameter holes in wood for pipe, conduit and other applicationsReplaceable coarse screw point drills quickly in dry, wet, and gummy woodAll bits have a 7/16 in. hex quick change impact shank that fits 1/2" or larger electric drills or...

3X Cutting edges extends bit life compared to standard IRWIN self-feed bitsAggressive Screw Pitch7/16 in Quick Change Impact Shank

Single cutter and side lip effortlessly bores holes in wood where nails may be encounteredCuts through nails without damaging the bitFull-length heat treatment guards against bending in heavy-duty applications and strengthens the twist where the greatest...

3X Cutting edges extends bit life compared to standard IRWIN self-feed bitsAggressive Screw Pitch7/16 in Quick Change Impact Shank

3X Cutting edges extends bit life compared to standard IRWIN self-feed bitsAggressive Screw Pitch7/16 in Quick Change Impact Shank

For drilling large diameter holes in wood for pipe, conduit and other applicationsReplaceable coarse screw point drills quickly in dry, wet, and gummy woodAll bits have a 7/16 in. hex quick change impact shank that fits 1/2" or larger electric drills or...

3X Cutting edges extends bit life compared to standard IRWIN self-feed bitsAggressive Screw Pitch7/16 in Quick Change Impact Shank

3X Cutting edges extends bit life compared to standard IRWIN self-feed bitsAggressive Screw Pitch7/16 in Quick Change Impact Shank

For drilling large diameter holes in wood for pipe, conduit and other applicationsReplaceable coarse screw point drills quickly in dry, wet, and gummy woodAll bits have a 7/16 in. hex quick change impact shank that fits 1/2" or larger electric drills or...