M42 cobalt hole saw kitArbour 1 has a 3/8" shank and fits hole saws 9/16 ~ 1-3/16"Arbour 2 has a 1/2" hex shank and fits hole saws 1-1/4 ~ 4-3/4"Available holesaws in this kit: 3/4, 7/8, 1-1/8, 1-3/8, 1-1/2, 1-3/4, 2, 2-1/4, 2-1/2, 2-5/8, 3, 3-1/2,...