Pack of 12 Straight Knives For Eastman Industrial Fabric Cutting Machines. High speed steel (HSS) straight knives. High speed steel has proven to be the most popular type of steel for general purpose cutting due to its resistence to wear after many sharpenings. High speed steel maintains a finer cutting edge for a longer leanth of time than other steels which may be available for cutting. Made in USA. Knife Size : 8" Pack of 12 knives