The blades are easy to change or rotate, Need to use a screwdriver to replace the blade. The floor scraping tool is made of durable plastic and steel with solid construction, good quality for long term application. The blade is firmly held in the reinforced channel by the handles . This scraper also features a snap-on protective cover for added safety when the scraper is not in use. The standard 4-inch scraper comes with a soft, ergonomic gripping surface for added comfort and a more secure fit. Also provides an extension pole to scrape the hard to reach area. All your specialized window scraping jobs such as paint, tape, stickers and construction debris such as stucco or putty, can be quickly and effectively removed from walls, windows, tiles and glass. Package: 1 x Improved 4-inch scraper, 10 x double-edged stainless steel blades.