PRODUCT DETAILS Click an item to expand and learn more Overview For Amana Tool #RC-4300 Solid Carbide Insert ACM 90° Double Edge V-Scoring Saw Blade Knives sold individually 5 knives required for #RC-4300 Each knife has 4 cutting edgesThese knives are for scoring Aluminum Composite (sandwich) Materials (ACM) with a 90° angle V-Groove and flat bottom width of 0.090". Reviews Questions and Answers