The door stoppers are made of high-quality stainless steel, the shape below the magnetic door stop is oval, the bottom is semicircle, and the size of the self adhesive door stop is 46mm×26mm. The half-moon rubber door stopper is blocked with rubber pads to absorb impact and provide cushioning to dampen noise and prevent dents and wear when the door is opened. Use these door bumpers in halls, bedrooms, bathrooms, balconies, doors, prevent doorknobs from damaging walls and protect your doors. If you buy, you will get 4 metal door stops.