Self-Healing Cutting Mat 216x305mm (Green)Excel Blades 216x315mm Cutting Mat Green The Excel Blades Self Healing Mat is a must have accessory for hobbyists and designers who frequently use cutting tools. Specs: Size: 216x315mm (8. 5 x 12) Features a one inch grid pattern for accurate cutting and trimming These cutting mats feature a surface material that absorbs cuts from a sharp Excel Blades knife. The cutting mat reserves the surfaces around your work space and protects it from sharp tools