HIGH QUALITY: The ceramic hob scraper is made of high quality thermal injection molded plastic with strength and rigidity. The glass scraper is also resistant to many chemicals and solvents SAFE: To protect you from our razor-sharp blades, there are two protective caps for the ceramic cleaner for safe storage! Blade changing is easy and simple with our mechanical ratchet feature. DOUBLE EDGE: Comes with 20 metal blades and 20 plastic blades as spare blades for double edge ceramic scraper. It is suitable for hard and soft surfaces, leaving no scratches and meeting your various needs COMFORTABLE: The ergonomically shaped rubberized handle fits firmly and comfortably in the hand. Wide Application: Convenient to use in many different positions: glass, windows, cleaning hobs, removing paint, glue, sticker residue. Not suitable for wood or plastic, as grooves may appear.