Multi compartment plastic insert 18 hole
These plastic inserts fit stacked three high in our Multi compartment case, and are sold as a "double skin". This means that used together they are stronger and less likely to crack or split over time. (We do not recommend using these separately, and do not guarantee the life of the insert if used separately) Each compartment measures 5.5cm x 5.3cm and can fit around 60gms of paint or, a whole 50gm rainbow cake. You can also fit two one strokes side by side, if you trim the inner edges.
18 hole insert pictured on the left in the picture.