From the Manufacturer
MK Morse Master Cobalt Bi-Metal Hole Saw Locksmith Kit. Designed for the professional locksmith, this kit contains sizes for installation of popular locks, deadbolts, etc. Saws (1 each): 7/8″, 1″, 1-1/4″, 1-1/2″, 1-3/4″, 2-1/8″ Arbors (1 each): M24, M45P