Auger Bit I-100 1/2 in. X 7-1/2 in. - Solid Center

Design provides extra rigidity while boring, wide lands keep bit straight as it bores. Flutes are ground behind the lands to funnel chips to bit inside for cleaner/faster cut. Single spur cutting edges scribes hole, bits have 4-1/2 In. twist & 7-1/2 In. overall length. Full length heated treated bit.