ABEST NEW Self-Healing Artist's Cutting Mat X-Large A4 22&times;30CM W/ 7 Precision Knife Self-Healing Artist's Cutting Mat X-Large A4 2230CM With 7 Precision Knife Professional-quality cutting mats are for most any cutting job Durable cutting mats are suitable for both rotary cutters and straight utility blades With 6pcs knife blade selection and one handles models of precision knife Cutting traNo hurting to the knife! Cutting trace can heal automatic, leaving no trace.