I've been riding with one for almost 2 years. Holder fits bottles with 77 mm diameter.
Maximum spacing for bolts is 68 mm.
Minimum bolt spacing is 43 mm.
Printable out of PETg or ideally PETg with carbon fiber (gcode here). Supports and brim are recommended. The print tends to warp so other materials need finer tuning.
The author marked this model as their own original creation.