Robust Construction: Crafted from high-quality resilient steel, each door stopper in this 12-pack set measures 8.3 cm in length with a sturdy 2.5 cm base. The package includes all necessary hardware such as mounting screws and anchors, ensuring a and secure installation to protect your walls and doors effectively. Enhanced Wall Protection: Designed with a wide base, these heavy-duty door stoppers prevent fast-swinging doors from slamming into your walls, thereby avoiding unsightly doorknob holes. They are ideal for preserving the integrity of door materials including wood, steel, and fiberglass from marks and scrapes. Simple Installation Process: Equipped with 2.1 cm screws, these spring door stops are straightforward to install. No special tools are required, making the setup quick and easy. Once installed, they offer long-lasting protection for both your doors and walls, maintaining the aesthetics of your space. Versatile Application: The flexible design of these spring door stoppers makes them suitable for a wide range of environments including bedrooms, bathrooms, living rooms, offices, and educational institutions. They are compatible with all types of doors and walls, ensuring universal usability. Quiet and Protective Rubber Tip: Each door stopper features a soft rubber tip that not only prevents damage to your door and wall but also ensures a quieter operation. This design detail helps maintain both the physical and acoustic quality of your environment, making it more comfortable and serene. Color: Black Material: Steel Package Contents: 12 x Spring door barrier 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.