The Astro Tools 1750K Air Scraper Kit is designed to remove gaskets, paint, rust and other materials. in addition to those it also removes undercoating, seam sealers, etc. and includes a built-in regulator. This kit includes 4 specialty blades which come in the following sizes: 1.77-Inch Wide Blade, 1.75-Inch L-Shaped Blade, 1-Inch Wide 45-Degree and a 1-Inch Wide Blade.