Strong and Durable: Heavy-duty door stopper made of stainless steel with electroplating process and durable rubber. Features a nice metal finish, waterproof and rust-proof, strong and long-lasting. Sturdy enough for any heavy-duty door. Adhesion and Non-Slip: Door stoppers for bottom of door do not slide, with rubber on both top and bottom. Rubber provides a firm grip on floor and door without moving. Holds the door securely, even in strong winds. Adjustable Design: Door wedge stopper with spring-loaded mechanism adjusts to fit door gaps from 1 inch to 3 inches. Solves the problem of standard stoppers being too short, ensuring reliable performance. Excellent Door Stop: Large door stopper suitable for heavy commercial swinging doors, metal doors, double doors, safety doors, self-closing hinged doors, and balcony doors with larger gaps. Works well on glass doors, carpet, parquet, and tile surfaces. Safe and Sturdy: Automatically adjusts to the space under the door. Ideal for commercial, residential, garage, corporate, public spaces, and schools. Keeps heavy doors securely open and prevents them from slamming shut due to wind. Color: Black + Silver Material: Stainless Steel Size: 13 cm Package Contents: 1 x Door Stopper Note: Light reflection and different display settings may cause slight color variations between the image and the actual item. Measurement may vary by +/- 1-3 cm.