Speedbor 3x cutting edges extends bit life. Use for drilling large dia. holes in wood for pipe, conduit & more. Replaceable coarse screw point drills quickly in dry, wet & gummy wood.
Precision-milled shank eliminates runout & wobble
7/16" quick-change hex impact shank (fits 1/2" or larger electric drills or hex impact wrench drills, 7/16")