Made of practical silicone material, these door handle bumpers are and functional. Strong, easy to install. Attach the bumper to the wall to protect it from damage from doorknob, doorknob slamming. The pads dampen noise by absorbing vibrations and providing cushioning. Features -Material: Silicone -Supple material, does not hurt the wall, gives a supple cushion between your doorknob and the wall when opening the door. -It can be placed on the outdoor knob to prevent wind dust from entering and damaging the lock! -These door handle wall protectors, made of waterproof materials, will last you a long time. -No more tools or drilling required to install your wall door plugs, they are super easy to install on pre-wiped surfaces. -With the door bumper, you will forget those loud as it absorbs the impact when it hits the wall. Package list: 1 knob protector