This WoodRiver® 24-piece bit set includes a line of imported Forstner bits that Woodcraft has tested and found to cut clean and not burn even when testers intentionally subjected them to quick, repetitive drill press borings. The 24-piece set includes bits 1/4" through 3-1/8" in 1/8" increments and a wooden storage case. Bits less than 2-1/8" in diameter are 3-1/2" long with 3/8" shanks. Bits 2-1/4" in diameter and larger are 6" long with 1/2" shanks. This set is good for making flat bottom holes, partial arcs and ends grain holes.