ARTEZA Rotary Cutter Quilting Kit, Set of 4 (6.5X24 Ruler, 18X24 Mat, 45mm Cutter, 45mm Blades 3 Pack) Includes: (1) 45mm Rotary Cutter (3) 45mm Rotary Blades (1) 6.5X24" Acrylic Ruler and (1) 18X24" Self Healing Cutting Mat 45mm rotary cutter features an ergonomic soft grip handle for comfort, blade guard with safety lock feature. Ambidextrous - Blade visible with right & left hand Easily slash through 4 layers like a samurai with (3) 45mm authentic Japanese steel blades 6.5X24" Patchwork acrylic ruler is Non slip for stable and safe cutting - Patented double colored grid lines for clarity on light & dark fabrics - 1/2 inch seam allowances 18X24" Self Healing Mat - Double-sided, Anti-glare & Non-slip surface for Easy and Safe use - Triple-layered for Durability - Made from 100% Non-toxic & Odorless TPO & PP