Irwin® 49909 I-100 Full Length Auger Bit, 9/16 in Dia, 7-1/2
in OAL, 4-1/2 in L Spiral Flute, 5/16 in Shank
Irwin® Speedbor® 88824 2000 Standard Length Spade Bit, 1-
1/2 in Dia, 6 in OAL, 5 in L Flute Flat Flute, 1/4 in Shank