Molded from hard-wearing, off-white ABS Plastic, these 10" painting knives won't corrode or rust like traditional metal knives. Their long symmetrical sides are excellent for thick and thin applications, smoothing, scraping, and hard edges. Their flexible tip and flat surface area are ideal for building texture. They are lightweight with excellent balance for extended use. These solvent-safe, easy-to-clean knives can be used with all mediums.