Irwin Tools 42420 1-1/4-Inch Short Ship Auger Bits Single cutter and side lip is designed to bore holes in wood where nails may be encountered. Cuts through nails without damaging the bit Hollow center flute clears chips quickly out of the hole. Ideal for applications where chip clogging can be a problem such as with green wood and creosoted poles Full-length heat treated bit guards against bending in heavy-duty applications and strengthens the twist where the greatest strain occurs Short length allows bit to be used in tight areas Wide lands keep the bit straight as it bores through the hole. Medium-fast screw point is ideal for general wood boring applications