Irwin 49915 Power Drill Auger Bit, 15/16 in Dia, 7-1/2 in OAL, Solid Center Flute, 1-Flute, 5/16 in Dia Shank

Full length heat-treated bit with wide lands keep the bit straight as it bores through the hole. The flutes are ground behind the lands to funnel chips to the inside of the bit and away from the outside diameter. Single spur cutting edge scribes the circumference of the hole, coarse screw point provides fast boring in hard and soft woods. All bits have a 4-1/2 in twist length and a 7-1/2 in overall length.Solid center design provides extra rigidity while boringWide lands keep the bit straight as it bores through the holeSingle-spur cutting edge scribes the circumference of the hole for a smoother finishCoarse screw point provides fast boring in hard and softwoodsFull length heat-treated bit guards against bending in heavy-duty applications and strengthens the twist where the greatest strain occursThe flutes are ground behind the lands to funnel chips to the inside of the bit and away from the outside diameter, producing a faster, cleaner cut