Carbon steel construction means these blades hold a sharp edge through heavy cutting rather than dulling after a few passes. Excel #9 single edge blades fit standard craft knife holders, the ones with removable blade compartments in the handle, giving you fresh cutting performance whenever precision matters. That consistent sharpness makes clean difference when trimming illustration board, cutting masking film, or scraping dried paint from palette surfaces.

Single edge design provides better control than snap-off utility blades for detailed work. The blade sits securely in the holder without wobbling, maintaining the exact cutting angle you establish. Keep several on hand; switching to a fresh blade costs pennies and eliminates the frustration of forcing dull edges through materials. Professional model makers and mat cutters replace blades frequently rather than struggling with degraded performance, treating sharp blades as consumable tools rather than permanent fixtures.