Multi-Purpose Razor Blade Scraper Tool--- Helps You Clean. Get one. You can use it for many tasks easily. It is an amazing scraping tool: It is a glass scraper, window scraper, tile scraper, sticker scraper, stove top scraper, caulk scraper, etc. Warm Tips: About how to install/replace the blade, we upload a video with detailed steps;The blade is very sharp. When not in use, it is recommended that you remove the blade for storage, or install the blade with the sharp part facing inward;