This is an easy-to-operate 20" (50cm) mat-cutting system designed specifically for photographers. Handles mat board up to 16 x 20" (40 x 50cm). Small 12 x 23" (30.5 x 58.4cm) system doesn't require much space so it's perfect for small studios. Includes parallel mat guide for setting border widths up to 5" (12.7cm), 90-degree squaring bar, straight cutting head, and bevel cutting head. Includes creative matting instructions and five extra blades.