1. 2 installation methods, 1) 3M tape double-sided self-adhesive, no drilling required, 2) screw in; our installation method ensures that our door stopper can be used on any surface of the wall, protecting your tiles, glass, cement, wood, fiberglass, any smooth or rough surface from impact with door handles, furniture or cabinets. Note: 3M double-sided tape should be left to stand for 24 hours before use for better results. 2. Reliable installation, tape, we choose 3M, strong adhesive; screw, compared with others, we add one screw, the triangular support is more stable, both installation methods have a long service life, its hanging weight can reach 10 pounds, never fall off, always protect your wall. You can mount it on the wall to keep the door open, or mount it on the door so that there is no need to damage the wall 3. Your package contains 2 sets, available in a variety of colors, 3 inches in height, made of stainless steel, will not rust, ensuring durability and reliability. Well-made, solid feel, beautiful appearance, very suitable for home use. 4. Updated details , Our bumper rubber tips are difficult to remove, we the tips with screws, reducing the risk of the tips causing choking hazard. The rubber tips protect your door, create a significant cushioning effect between the door handle or knob and the wall, also reduce noise, which is really necessary in high traffic areas like schools or offices. Note: 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.