Introducing the ultimate solution to your door-stopping needs, the door stopper with a unique spring design that allows for height adjustment. Unlike traditional doorstops, this one is tall enough to prevent doors from sliding through easily. Crafted with strong adhesion and anti-slip features, this heavy-duty door stopper is equipped with rubber grippers on both the bottom and top, ensuring a firm grip on floors and doors, preventing any unwanted movement. Made from durable metal and rubber, this door stopper boasts a smooth, waterproof, and rust-proof surface, guaranteeing long-lasting performance. Its sturdy construction makes it suitable for heavy-duty doors, including spring swing doors, bi-fold doors, security doors, and even parquet or tile flooring. Versatile and reliable, this door stopper is perfect for various settings, whether residential, corporate, commercial, public places, or schools. Let this door stopper handle all your heavy door needs effortlessly. Item Name: Door Stopper Material: Zinc Alloy Suitable for Door Gap Range: 20-60MM Features: Heavy Duty, Height Adjustable, Anti-slip Rubber Bottom Size Details: L: 13.5cm/5.31", W: 7cm/2.76" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Door Stopper