9 pcs Hole saws: 20mm (25/32"), 22mm (7/8"), 25mm (1"), 29mm (1 1/8"), 32mm (1 1/4"), 35mm (1 3/8"), 38mm (1 1/2"), 44mm (1 3/4"), 48mm (1 7/8"), 50mm (1 31/32")

1 pc Arbor: 1/4" Round shank, fit size: 9/16" ~ 1 3/16"

1 pc Arbor: 7/16" Hex shank, fit size: 1 1/4" ~ 8 17/64"

1 pc Adaptor: for 1/2" - 20 thread arbors to fit 5/8" 18 thread hole saws