Parts such as the Rr,mudguard Extensio: Nut,u.,6mm, Rr.mudguard Extensio are included in the Vt1100c3 Shadow Aero 2000 (y) Australia Rr,mudguard Extensio parts fiche.
In this schematic the "Nut,u.,6mm" is used most often.
The Vt1100c3 Shadow Aero 2000 (y) Australia Rr,mudguard Extensio consists of two pieces with the Rr.mudguard Extensio being the most expensive.