Use these strong grip adhesive cutting mats to make clean cuts of thicker items that might slip around on a smooth surface, like chipboard, mat board and specialty cardstock. The adhesive firmly holds the pieces so you can make a clean cut and tear the material neatly off the mat with ease. Details: Black with white grid 12" x 12" (30.4cm x 30.4cm) 2 mats Strong grip adhesive PVC, PET and resin glue Compatible with most cutting machines