The 81780 Gasket and Surface Prep Scraper features two blade widths, one and one quarter inch and five eighths inch, allowing technicians to remove gasket residue, carbon buildup and rust from a variety of engine surfaces. It is designed for use on both steel and aluminum cylinder heads and manifolds and can also be used to clean disc brake caliper slides. The tungsten carbide tip is brazed to the steel blade and remains extremely sharp, providing long lasting performance. A six inch molded handle offers comfortable control. Users should exercise caution when working on aluminum surfaces to avoid scratching.