Multifunctional polyester putty.
It combines the features of fillers (good adhesion to various surfaces, filling every unevenness, convenient application and processing with coarse-grained papers) with finishing fillers (convenient application in thin layers and filling small cavities, processing with fine-grained papers).
After it is applied, it creates a very smooth surface, reducing your time spent on polishing. It cannot be used on surfaces in direct contact with food and drinking water.