Check the listing for details. Eastman Straight Cutting Machine 6" Knife Blades - 12 Pack. Condition: New. Listed at 42.50 USD. Eastman Straight Edge Cutting Machine Knives Description: Pack of 12 Eastman Straight Cutting Machine Knives. Knife Size : 6" These High Quality Cutting Machine Knives are made of high speed steel and come in a factory packed set of 12. 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 length of time than other steels which may be available for cutting. For Eastman "Blue Streak II Model 629" and "Brute Model 627" Straight Fabric Cutting Machines. These knives are available in other sizes. Shipping: Free shipping in the USA. Contact Us: Feel free to contact us anytime. Please e-mail us if you have any questions.You can typically expect a response within 1 business day. Thank you.