Master Mechanic, MADE IN USA 100 Pack .012 Single Edge Razor Blade, Fits All Standard Razor Blade Tools, 1/3 Thicker For Rugged Use, High Carbon Surgical Steel, For Scraping, Cutting & Trimming Wallpaper, Upholstery, Paint, Glass, Etc., Each Blade Protected In Shelling Paper, Resealable Clear Plastic Clam Shell Storage Box.