COMPATIBLE WITH MOST DOOR HANDLESOpening diameter: 18mm, suitable for 17-18mm door handles. TOOL FREE, NO DRILLINGEasy To install, simply slide the door handle protector to the desired location on the door/window handle and remove it at any time without leaving a trace. NON-SLIPour doorstops are very strong and very padded, so you don't have to worry about the door stoppers slipping off. Use the thermal pad in warm water for better stretch. (Caution: Do not burn your fingers). INVISIBLY WATERPROOFCompared with other door handle protectors, our doorstops are more transparent, no worries about yellowing. It is waterproof and can also be fixed on bathroom door handles, balcony or kitchen door handles. WALL PROTECTIONdoor handle protection are made of high quality elastic plastic with optimal damping properties, odorless, transparent and practical, the perfect solution to prevent door and window handles from damaging walls and furniture. It will not affect the decoration of your home, the transparent color can blend with any background. You can place our door stops where you need them. Feel free to remove and install, no mark or damage.