With 20 spline central hub.
(the central hub in the product image is an example as well as the diameter of the disc)
16 holes
8 mm thickness
20 splines M90, Sinter 4-puck, 228 mm
20 splines M90, Sinter 4-puck, 184 mm
184 mm, 184 mm, Sinter 6-puck, Sinter 6-puck