Irwin

Description

Solid center design provides extra rigidity while For use in 3/8 in. or larger electric drills and hand braces7/32 in. shankSolid center design provides extra rigidity while boringWide lands keep the bit straight as it bores through the holeThe 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 cutSingle-spur cutting edge scribes the circumference of the hole for a smoother finishFull-length heat treated bit guards against bending in heavy-duty applications and strengthens the twist where the greatest strain occursCoarse screw point provides fast boring in hard and soft woods4-1/2 in. twist length and a 7-1/2 in. overall length1/2 in. diameter