X-ACTO X223 5pc No 23 Corner Stripping Knife Blades. For corner cuts, and trimming in tight areas. Plastic, wood, linoleum, rubber, and foam. Double Edged. Fits 3/8 inch X-ACTO No 2, Type c, and Type D handles, as well as Excel K2, K5, K6, and K7 Handles.