4 model

Free

Hydroponic NetCup Mason Jar Adapter

Thingiverse

Free

mhpgardener-netcup

Thingiverse

Free

Mod for 2" 50 mm Netcups so they don't fall through the holes.

Thingiverse

Free

Hydro-Wiz 2in Net cup fix 4in pvc

Thingiverse