This stackable paint bottle holder can be used with all 25mm bottles, like Army Painter, Vallejo, AK and many other brands. I designed this because it doesn't need much space, has an easy overview, protects the bottles from drying out and these racks are easy to transport.

There are some people who have problems that the studs break off, you can prevent this by setting the right wall thickness OR you can download the NEW 2021 version with the metal pins at https://pinshape.com/items/107541-3d-printed-dropper-paint-bottle-holder-stackable-new-version