X-Acto - No. 25 Large Contoured Blade - 5 Pack - X-Acto No. 25 Large Contoured Knife Blade is for heavy-pressure cutting carving, and trimming. Plastic, wood, linoleum, rubber, and foam. Contoured Edge. Fits 3/8 inch X-ACTO No 2, Type c, and Type D handles, as well as Excel K2, K5, K6, and K7 Handles. X-ACTO does not offer this item in larger packages.