A Spanner for the lid of Fermzilla range of fermenters by Kegland.
I've only tested it with the all rounder model but I think the lids are the same. It may work for other models as well.
Print in PLA as its a little stiffer than PETG. Other filaments such as CF composite may work well
Use 3 or 4 perimeters. The handles will work without glue but its probably best to glue them in place.
The author marked this model as their own original creation.