ToolUSA 9"x12" Self Healing Mat & Blade Set Self Healing Mat Is 9 Inches By 12 Inches With Pre-marked Inches And Mm Measurements Mat Comes With 45 Degree And 60 Degree Angle Indications + Grid Lines For Precise Work Made Of Self Healing (non-scratch) Composite Material So Ideal For Cutting - A Craftsman's Dream! Blade Is 6 Inches Long And Comes With An Additional 7 Extra Blades - Can Use It For A Long Time Blade Also Comes With Plastic Cap So It Protects You And The Blade From Damage When Not In Use