The Double-Sided Rotary Mat optimizes cutting. The mat is constructed with three heat-welded layer for long life. The self-healing finish reseals surface cuts providing smooth surfaces for all cutting projects. This Double-Sided Mat has grid-lines on one side for precision cutting and is solid on the opposite side for general cutting. The Double-Sided Rotary Mat is available 18" x 24" x .05" and 24" x 36" x .12" with an easy-to-read measuring grid and angles. The .05" thick mat is for use only with rotary blades fixed-blade knives may damage mat.