Choose the place on the tile wall where you want to attach the toilet paper holder.
Place a strip of masking tape on the place chosen. You can cover the entire tile if you choose, but that's not necessary. Some toilet paper holders may require that you cut two tiles.
Place the toilet paper holder on the wall slightly under where you want it placed. Mark the masking tape where the posts are with a pencil. Use a level to check that the marks are straight.
Attach a 1/4-inch diamond bit to your drill. Place the bit on the spot marked on the masking tape, pressing firmly.
Begin to drill at the lowest speed possible. The speed of a drill is regulated by how hard you pull on the drill trigger. Pull on the trigger slightly to cause the drill to work slowly. Once the hole has been started, you can run the drill faster.
Drill completely through the tile. You will know you are through when the drill moves back and forth freely in the hole. Drill the second hole in the same way. Remove the tape once you have drilled the holes.
Place plastic anchors in the holes. Hammer them flush with the tile by hitting them gently with a rubber mallet.
Attach the toilet paper holder plates to the anchors with the screws provided in the toilet paper holder package.
Attach the toilet paper holder to the plates. Load the spring bar with a roll of toilet paper.