Pack of 2 replacement blades for anti-fouling scraper The tungsten carbide blades stay sharp and powerful up to 50 times longer than a conventional steel blade. Moreover the sharp blades with precision, have slightly convex edges to reduce the risk of scratching the surface scratch. Features: anti-fouling scraper blades Tungsten Carbide Reversible 60 mm Use the product with caution. Before use, read the label and product information.