It has 3 types
YY-HS 702-1 5pcs hole saw: 7/8", 1", 1 1/8", 1 1/4", 1 1/2"
or mm:22, 25, 29, 32, 38mm
1pc arbors: 3/8" hex ,fit 14-30mm
1pc adapter: 1/2-20unf- 5/8-18unf
YY-HS702-2 5pcs hole saw: 3/4",7/8", 1", 1 1/8", 1 1/4"
or mm: 19, 22, 25, 29, 32mm
1pc arbors: 3/8" hex,fit 14-30mm
1pc adapter: 1/2-20unf -5/8-18unf
YY-HS702-3 4pcs hole saw: 3/4",7/8", 1 1/8", 1 3/8"
or mm: 19, 22, 29, 35mm
1pc arbors: 3/8" hex,fit 14-30mm
1pc drills: 1/4"*75mm
1pc adapter: 1/2-20unf-5/8-18unf
packing: inner: mail box
outer: export carton
