If you've ever tried to scrape stickers, paint, or gum off windows and surfaces, you know how frustrating cheap blades can be. These Unger professional scraper blades are the real deal. The 4-inch size works perfectly with Unger's scraper tool, and they're double-sided with carbon coating that resists corrosion and lasts way longer than regular blades. Each blade is reversible - when one side gets dull, just flip it and keep going. This 5-pack comes with a super handy storage case to keep your blades organized and protected. They're not just for glass either - work great on tile, marble, and other smooth surfaces. Perfect for professional cleaners, DIYers, or anyone dealing with stubborn residues. I used them to remove old paint splatters from my windows and they worked like a charm without scratching the glass. The carbon coating really makes a difference - they stay sharp through multiple uses. No more struggling with blades that rust or dull too quickly. Keep a pack in your cleaning caddy and you'll be ready for any sticky situation. Seriously makes window cleaning and surface prep so much easier.