The clutch holders from Buzzetti are two tools in one. The pins engage with the clutch bell, allowing the bell to be easily locked and the nut to be opened. Secondly, the large nut of the clutch can be removed with the wrench.
Caution: Different sizes of clutch nuts are used in Minarelli engines. Unfortunately, it is not possible to precisely define from which model years which nuts were used. But generally, the 41mm nuts are used, especially since the 41mm wrench can also open the 39mm nut.

Minarelli wrench size 38mm