The Morn Sun Durable Sharp Craft Blades feature high-utility, ultra-sharp replacement steel scoring tips. Premium carbon tool steel alloys guarantee long-lasting edge retention. The specialized fine-point wedge profiles seamlessly execute deep score cuts. Every component tracks smoothly through cardboard, vinyl, and films. A matching plastic safety storage case completely stops workbench punctures. This loose replacement supply neatly replenishes dull modeling knives.