HIGH QUALITY: The 9.5cm door stoppers for floor is made of durable stainless steel, which is rust-proof and strong. The door stoppers for walls can withstand the impact of the door and protects it well. Metal construction with rounded edges. Please take care when handling. NOISE REDUCTION: The white rubber at the end of the outdoor door stop provides a cushioning effect, reducing noise and impact, and saying goodbye to annoying slamming sounds. EASY INSTALLATION: 1. Self-adhesive door stopper requires no drilling and quick installation. 2.Screws are suit for wooden door/wall. 3.Expansion anchor bolts are suit for Cement structure wall. Please refer to the installation details in the picture. EXTENSIVE USE: Wall mounted door stop can be used in homes, classrooms, offices, etc. Chrome Door stop adhesive can also be installed in any place that takes impact, such as cabinets, closets, side tables, etc. Not applicable to narrow baseboards or small cabinet doors scenarios WARM TIP: The package contains 6 pieces of rubber door stops and other accessories. The length of the patio door stopper is 95mm. The heavy duty doorstop is versatile.