From the Manufacturer
Special jobs need special tools. This handy kit keeps the saw blade sizes pros need within easy reach. The M. K. Morse Master Cobalt Bi-Metal Hole Saw Industrial Kit covers a range of common industrial plumbing and electrical applications. Saws (1 each): 3/4″, 7/8″, 1″, 1-1/4″, 1-3/8″, 1-1/2″, 1-3/4″, 2″, 2-1/4″, 2-1/2″, 3″ Arbors (1 each): M34, M45P Extension (1): 12″, Ejector Spring (1): MES101