This fan spacer for the Prusa mini has a little groove to fit the Starlex DHB 22.5 hotend.
Original part can be cut, or printed for clean mount.
It is a drop in replacement hotend, with 22.5mm melting zone, similar to a volcano hotend within the V6 nozzle space.
Enjoy the quick tool free nozzle change over.
The author marked this model as their own original creation.