These 4-inch (10cm) carbon steel blades are reversible replacements for compatible Unger scraper handles. The double-edged design lets you flip the blade for extended use: the sharp side removes paint and stickers, while the blunt side clears cement and stucco residue. Durable carbon steel holds an edge through repeated light-duty scraping, and the pack comes in a compact dispenser for safe storage. Confirm your scraper model before ordering, as exact tool compatibility isn't listed in the source data.