Package comes with,

5 pcs Hole saw: 19mm(3/4″), 22mm(7/8″), 29mm(1-1/8″), 32mm(1-1/4″), 35mm(1-3/8″)

1 pc Arbor with positioning drill bit, 3/8“ hex shank to fit size: 9/16” ~ 1-3/16″

1 pc Adapter, 1/2″ 20 thread to fit hole saws 5/8″ 18 thread