120 mm Stainless Glass Scraper Blades are rust and corrosion resistant and offer easy clean-up. The keyed blade locks into the blade holding plate to avoid movement during tough scraping applications. The Heavy-Duty 120 mm Stainless Glass Scraper Blades fit both the 120 mm Glass Scraper (GSR-1,/3B, #1126049), as well as snap apart to fit the Mini Glass Scraper.