This tool from Core'dinations is perfect when sanding to reveal the core color of sandable cardstock. Use the larger side of the sanding block for larger areas and the smaller side for more detailed projects. Each package includes one hook and loop sanding block that measures 2.6" x 2.8" x 1.2", one 150 grit and one 180 grit sandpaper, as well as one cleaning cloth that picks up all the dust from your projects. It keeps you fingers and projects clean while leaving no residue behind.