Model Description Our Price   49904 Irwin Irwin - Auger bit, 4-1/2 inch twist , 7-1/2 inch overall. I-100 models. Single spur, coarse screw point. 7/32 inch shank. 1/4 inch diameter. $6.99 49905 Irwin Irwin - Auger bit, 4-1/2 inch twist , 7-1/2 inch overall. I-100 models. Single spur, coarse screw point. 7/32 inch shank. 5/16 inch diameter. $6.99 49906 Irwin Irwin - Auger bit, 4-1/2 inch twist , 7-1/2 inch overall. I-100 models. Single spur, coarse screw point. 7/32 inch shank. 3/8 inch diameter. $6.99 49907 Irwin Irwin - Auger bit, 4-1/2 inch twist , 7-1/2 inch overall. I-100 models. Single spur, coarse screw point. 7/32 inch shank. 7/16 inch diameter. $6.99 49908 Irwin Irwin - Auger bit, 4-1/2 inch twist , 7-1/2 inch overall. I-100 models. Single spur, coarse screw point. 7/32 inch shank. 1/2 inch diameter. $6.99 49909 Irwin Irwin - Auger bit, 4-1/2 inch twist , 7-1/2 inch overall. I-100 models. Single spur, coarse screw point. 5/16 inch shank. 9/16 inch diameter. $6.99 49910 Irwin Irwin - Auger bit, 4-1/2 inch twist , 7-1/2 inch overall. I-100 models. Single spur, coarse screw point. 5/16 inch shank. 5/8 inch diameter. $6.99 49911 Irwin Irwin - Auger bit, 4-1/2 inch twist , 7-1/2 inch overall. I-100 models. Single spur, coarse screw point. 5/16 inch shank. 11/16 inch diameter. $7.19 49912 Irwin Irwin - Auger bit, 4-1/2 inch twist , 7-1/2 inch overall. I-100 models. Single spur, coarse screw point. 5/16 inch shank. 3/4 inch diameter. $7.49 49913 Irwin Irwin - Auger bit, 4-1/2 inch twist , 7-1/2 inch overall. I-100 models. Single spur, coarse screw point. 5/16 inch shank. 13/16 inch diameter. $8.19 49914 Irwin Irwin - Auger bit, 4-1/2 inch twist , 7-1/2 inch overall. I-100 models. Single spur, coarse screw point. 5/16 inch shank. 7/8 inch diameter. $8.49 49915 Irwin Irwin - Auger bit, 4-1/2 inch twist , 7-1/2 inch overall. I-100 models. Single spur, coarse screw point. 5/16 inch shank. 15/16 inch diameter. $8.99 49916 Irwin Irwin - Auger bit, 4-1/2 inch twist , 7-1/2 inch overall. I-100 models. Single spur, coarse screw point. 7/16 inch shank. 1 inch diameter. $9.19 49918 Irwin Irwin - Auger bit, 4-1/2 inch twist , 7-1/2 inch overall. I-100 models. Single spur, coarse screw point. 7/16 inch shank. 1-1/8 inch diameter. $11.49 49920 Irwin Irwin - Auger bit, 4-1/2 inch twist , 7-1/2 inch overall. I-100 models. Single spur, coarse screw point. 7/16 inch shank. 1-1/4 inch diameter. $12.59 49922 Irwin Irwin - Auger bit, 4-1/2 inch twist , 7-1/2 inch overall. I-100 models. Single spur, coarse screw point. 7/16 inch shank. 1-3/8 inch diameter. $13.99 49924 Irwin Irwin - Auger bit, 4-1/2 inch twist , 7-1/2 inch overall. I-100 models. Single spur, coarse screw point. 7/16 inch shank. 1-1/2 inch diameter. $15.39