As a gunpla modeller, this tray is a HUGE help to me for applying waterslide decals. I've always used shallow dishes of water from my kitchen and a pair of tweezers to apply my decals (with not-so-desirable results sometimes) but this tray makes it a breeze! I really love that the top tray has dividers, so you can separate decals into sections and not have them touch each other. It's remarkable that the water doesn't need to fill over the top tray for the decals to absorb the moisture, so they separate easily. The application comb was a bit of a learning process at first but now I don't know how I've gone without it! The tapered edge really helps make it easy to just slide your decal into place. A must have for any gunpla builder!