9-Pc Annular Cutter Set W/case 1/2" Thru 1-1/16" 49-22-8410

3/4" shank. Three hardness zones make bit less susceptible to breakage. One centering pin size for all 2" depth cutters. 20% thinner wall construction for faster cutting. Duel alternating tooth geometry for more aggressive cutting as well as increased chip ejection. Includes sizes 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8", 15/16", 1-1/16", two pilot bits and case.