Dahle 10671 Vantage Self Healing Cutting Mat, 12" x 18", Black, 5 layer PVC Construction, 1/2" Grid Lines, for Maximum Durability, Perfect Cropping Photos, Cutting, Sewing, and Crafts

12" x 18" Black Cutting Mat Black Self healing properties allow for max durability 1/8" (3mm) thickness protects work surface from being damaged Preprinted 1/2" grid for easy sizing of paper