• Solid center design provides extra rigidity while boring
• 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, producing a faster, cleaner cut
• Single-spur cutting edge scribes the circumference of the hole for a smoother finish
• Coarse screw point provides fast boring in hard and soft woods
• All bits have a 4-1/2" twist length and a 7-1/2" overall length
• Full-length heat treated bit guards against bending in heavy-duty applications and strengthens the twist where the greatest strain occurs