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 construction suitable for heavy-duty doors. Adhesion and Non-Slip: Door stopper for bottom of door does not slide, with rubber on both top and bottom surfaces. Rubber provides a firm grip on floor and door without movement. Holds door securely, even in strong winds. Adjustable Design: Spring-loaded door wedge with adjustable height fits door gaps from 1 inch to 3 inches. Solves the problem of standard stoppers being too short, ensuring reliable performance for various door types. Excellent Door Stop: Large door stopper ideal for commercial swinging doors, metal doors, double doors, self-closing hinged doors, safety doors, and balcony doors with larger gaps. Works well on glass doors, carpet, parquet, and tile floors. Safe and Sturdy: Automatically adjusts to fit the space. 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.