Requires 2 10-12mm M5 countersunk bolts to attach the iFlag, and one 16mm M6 socket-head bolt and t-nut for the connection to the 8020. Printable M6 t-nut can be found here: https://www.printables.com/model/829122-m6-t-slot-nut
The author marked this model as their own original creation.