These Unger replacement blades are double-edged carbon steel, sized 6 inches (15cm), for trim and glass scrapers. One edge is sharp for adhesive removal, and the other is blunt for tougher materials like stucco and cement. Each blade is wax-wrapped to resist rust and packaged in a compact dispenser for organized, easy-access storage. They offer a universal fit for standard scrapers, though checking your scraper's specific blade size is recommended before ordering.