To facilitate the replacement of some of components of the pinwheel configured as an assembly, and to make the connection firm in an assembled state to thereby achieve smooth rotation possible.

The pinwheel 1 of a Pachinko game machine is assembled by engaging a pinwheel member 10 which is a transparent synthetic resin injection molded article with a decorative plate 20. The axial cylinder part 11 of the pinwheel member 10 is formed into a stepped hole having the maximum diameter at the upper end, and three locking pawls 15 with barbs are radially projected from the upper end at the interval of 120 degrees centering on the axial center of the axial cylinder part 11. Each locking pawl 15 with the barb is positioned at the center of blades 12-12. On the decorative plate 20, three locking holes 22 are radially opened at the interval of 120 degrees centering on the axial center of a thin hole 21, and a protrusion row 23 to which the upper end of the blade 12 is to be fitted is projected on the back surface.