Sharp Edged and Flexible, Plastic Razor Blades can be used on a variety of surfaces and detailing jobs. Made of durable Polycarbonate. The blades are made bendable to not damage the surfaces being scraped. These double-edge blades are completely safe on almost any surface, but much sharper than most plastic blades are used for scraping, cleaning, and peeling debris from most surfaces and where a metal blade isn't appropriate. Dozen and one applications for car, home, work. Works best with a wet surface to lubricate Economical to use. The Safe Scrape Double Edged Plastic Blades are an ideal tool for scraping away unwanted materials without the worry of damaging the surface Plastic Razor Blades can be used on a variety of surfaces and detailing jobs. These double-edge blades are completely safe on most surfaces, but much sharper than most plastic blades Durable and safe. Two edges per blade. Handled safely, won't cut. Blue Blades. Double-Edged 200 Edges to use per pack