4 inch scraper replacement blades are made of high carbon steel. Application:remove window/glass wallpaper,clean stick and peel residues,stickers,glue,paint floor adhesives and more. Razor blade is single edge.the replacement blades for you razor blade scraper. Package:10 boxes,each box with 10 blades,total 100pcs blades. Product description The perfect tool for all your scraping needs! Made with high-quality materials, these blades are durable and long-lasting, ensuring that you get the most out of each use. Wide application:4 inch scraper blades are commonly used in construction,woodworking, and DIY projects.They are effective for removing paint, glue, caulk, and other materials from surfaces such as walls, floors and furniture.They can also be used for smoothing or shaping wood or other materials. Each blade measures 4 inches in length and is compatible with a variety of scraping tools,making it a versatile addition to your tool kit.Whether you need to remove paint,glue,or other materials,these scraper blades are up to the task. With more replacement blades, you can always have a fresh blade on hand when you need it.