Whether you're smoothing out imperfections, preparing surfaces for paint, or achieving a flawless final finish, these sanding sponges are an essential addition to any modeler's toolkit. The different grits enable a progressive sanding approach, starting with the coarser 800 grit for initial shaping and defect removal, moving to the 1000 grit for refining the surface, and concluding with the ultra-fine 1200 grit for a silky-smooth, polished look.These sanding sponges are ideal for achieving professional-level results on a wide array of plastic model kits.