IRWIN 46609 9/16" x 18" Twist - Bulk Utility Po

Single spur, cutter, and side lip are designed for boring through creosoted poles without clogging, binding, or stopping to clear chipsExtra-long twist is ideal for boring large poles, construction timbers, and for multiple timber applicationsRemove the taper square shank and use in an electric drill or hand braceFull-length heat treated bit guards against bending in heavy-duty applications and strengthens the twist where the greatest strain occursBit can be resharpenedMedium-fast screw point ideal for general woodboring applicationsSpecificationsItem #DiameterShank Size/TypeTwist LengthOverall Length4651111/16"5/16" hex8"12"4651313/16"5/16" hex8"12"466063/8"Taper square12"18"466077/16"Taper square12"18"466081/2"Taper square12"18"466099/16"Taper square12"18"466105/8"Taper square12"18"4661111/16"Adapter Shank12"18"466123/4"Adapter Shank12"18"4661313/16"Adapter Shank12"18"466147/8"Adapter Shank12"18"4661515/16"Adapter Shank12"18"466161"Adapter Shank12"18"466171-1/16"5/16" hex12"18"4671111/16"5/16" hex18"24"4671313/16"5/16" hex18"24"4671615/16"5/16" hex18"24"