Rubber Door Silencers, 100 Pieces; Metal Door Anti-Collision; Heavy-Duty; Product Features: ?High-quality materials? The silicone rubber used for metal door silencer is high quality, high temperature resistant, good sealing performance, odourless, not easily deformed, safe and environmentally friendly, and can meet your long-term use needs ?Good use effect?Using the metal door silencer can absorb shocks, reduce noise and loudness, and bring you a quiet environment ?Easy to install? Simply align the tip of the silencer with the hole in the door and squeeze the silencer in with a tool to complete the installation, easy and quick ?Dimensions?The bottom outer diameter is approximately 12mm/0.47", the upper cone diameter is 8mm/0.31" and the card height is 2.5mm/0.098"; high quality surface technology with a smooth, textured, burr-free surface ?Adequate quantity?You will receive 100 metal door silencers, sufficient quantity for your daily use and replacement needs.