k40 equalizing tank holder to mount under cross-bracing.
Sits tightly and firm.

Use the standard tank with 200ml (Size: 60 X 80 X 60 mm/2.36 X 3.15 X 2.36 in). Is sold on Amazon or even for cheap on Aliexpress.

This thing was made with Tinkercad. Edit it online https://www.tinkercad.com/things/55eHPaP7LO1