About this item HOLE OPTION IN TWO DIFFERENT SIZES: The door handle stopper has two cavities (holes), one big and one small. While attaching one gap to the door/window handle, the other gap acts as a buffer between the wall and the door handle. The diameter of the large cavity (hole) is 18 mm. The diameter of the small cavity is 15 mm. STOP WALL PAINT SPILL: By using the bumper wall guard, prevent your door and window from hitting the wall or furniture, and avoid paint damage and spillage. Our product, which is produced to prevent the doors from hitting the wall, is transparent. PREVENTS DOOR SLAMMING AND NOISE: Does not stick to the wall. It does not spoil your room design. When you open the door, the handle bounces off the bumper wall. It completely eliminates the crashing sound. EASY TO INSTALL AND REMOVE: No tools needed, no drilling and sticking required, just attach the stopper to the handle, easy to remove when not needed. SUITABLE FOR: Kitchen, Bathroom, Bedroom, Office, Living Room, Toilet Door Handle and Window Handle, in short, all standard handles. If the holes are too small for the doorknob, soak it in hot water for a while, then try reattaching it to the door. This time you will see it stuck. package:10pcs Anti-collision pad.