Blade for Lawson-Wohlenberg RT340 paper cutters, standard inlaid high speed steel (AKI-I) by Alliance Knife Company. This blade measures 16.688" long x 4.527" high and .395" thick. When ordering knives, please double-check the brand, model and serial number of your cutter, and measure your knife carefully. There is a 15% restocking fee for returned knives due to customer error.