1. Prepare tools, the most important thing is to prepare a hammer drill. It should be noted that a larger drill bit should be selected according to the size of the expansion screw installed.
2. First draw the approximate position of the shelf, then use tape to measure the height and hole spacing, and mark it with a pen.
3. Use impact drilling. Place the expansion screw into the hole and tap it with a hammer to secure the expansion screw. Different types of expansion screws.
4. Insert the shelf into the fixing screws, and that’s it.