size:
13pcs hole saw: 3/4", 25/32",, 7/8", 1", 1 1/8", 1 1/4", 1 3/8",
1 1/2", 1 3/4", 2", 2 1/4", 2 5/8", 3",
or mm: 19, 20, 22, 25, 29, 32, 35, 38
44, 51, 57, 67, 76mm
2pcs arbors: 3/8" hex,fit 14-30mm,
7/16" hex,fit 32--210mm
1pc extension: 12" for 7/16" shank
packing: inner: aluminium case
outer: export carton