Hole-free installation steps: Wipe the wall clean Wrap the nail-free sticker in the place where you want to attach the toilet paper holder After squeezing out the air bubbles in the nail-free stickers, please wait 24h Remove the nut on the nail-free sticker, then install the toilet paper holder Finally, attach the screws and black nuts Drilling Installation Steps: Choose the ideal installation location for the toilet paper holder and mark the holes with a pen Drill holes on the marked holes Insert the white plastic expansion tube into the drill hole Fasten the toilet paper holder with screws Finally, attach the black nut EONLION Toilet Paper Roll Holder Wall-Mounted With Mobile Phone Storage Shelf in Black