Adjustable and Versatile: This 3-inch high door stopper features an innovative spring design that adjusts to accommodate various door sizes, ensuring a snug fit for floor clearances between 0.5 and 3 inches. Note: Not suitable for gaps under 0.4 inches. Enhanced Stability with Non-Slip Design: Equipped with rubber fasteners on both the bottom and top, this heavy-duty door stopper ensures a firm grip on all types of floors and doors without sliding, providing reliable performance even under heavy use. Universal Floor Compatibility: Designed to securely grip a wide range of surfaces including cement, carpet, wood, and tile floors. This versatility makes it an ideal choice for virtually any indoor environment, enhancing its utility and effectiveness. Robust Construction for Heavy Doors: Crafted from durable stainless steel and robust rubber, this door stop is waterproof, rustproof, and built to withstand the demands of heavy doors, making it a long-lasting addition to your home or office. Simple Installation Process: Installation is straightforward-simply step on the raised side to compress the spring, and then gently clamp the stopper onto the door. This easy method ensures a secure fit and quick setup without needing extra tools. Colour:Black Material:rubber Package Contents: 2 x door stopper Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.