Ingco Bi-metal hole saw set AKH0071

7Pcs Bi-metal hole saw set
Size: 19mm(3/4″),22mm(7/8″),29mm(1-1/8″),32mm(1-1/4″),35mm(1-3/8″)
1 Pcs adapter?1/2″-20″ threads to fit hole saws 5/8″~18″thread
1 pcs arbor?3/8? Hex Shank?Fit Size?9/16?~1-3/16″
Packed by doulble blister