Spinners
Spinners come in three types: diameter 205, 220, 265 and 300 mm (8", 8.5", 10" and 11.8").
The small spinner is designed for a small hub of 75 mm.
The large spinner is designed for a large hub of 101.6 mm. It is also suitable for a small hub.
The middle spinner 220 mm is designed for Jabiru hubs.