9PCS ELECTRICIAN’S BI-METAL HOLE SAW SET

9 Pcs Bi-metal hole saw set Material: HSS M3 Bi-metal Size: 22mm (7/8″) / 29mm (1-1/8″) / 35mm (1-3/8″) / 44mm (1-3/4″) / 51mm (2″) / 64mm (2-1/2″) 1 pcs arbor: 3/8″ Hex Shank, Fit Size: 9/16″~1-3/16″ 1 pcs arbor: 7/16″ Hex Shank, Fit Size: 1-1/4″~8-17/64″ 1 pcs adapter arbors with 1/2-20 threads to fit hole saws 5/8-18 threads Packed by plastic box.