Material: The door stop is made of sturdy zinc alloy, impact resistant and durable. The large contact surface and symmetrical spring ensure strong closing force. Door holder: Perfect for mechanical doors that require strong closing force. It protects your doors from scratches and stains and prevents handles from damaging your walls. Easy to use: The door stop is small and lightweight for easy installation, the concealed screw design ensures quality and durability, even in humid environments. Wide application: Our metal door stop is perfect for door blocks of caravans, motorhomes, yachts, houses and garden gates. Note: The data is all measured manually, please allow 1-3 cm error due to light and display difference, there may be color difference, please refer to the actual item received.