The complete sliding door sets contain all the necessary fastening materials to install the wheels, rails, and possible additions. On top of this, it is useful to also have a pencil, 8 mm hammer drill bit, 13 mm spanner, spirit level, screwdriver, measuring tape, and a power drill. It is of utmost importance to install the sliding door level, because the door will roll down the rails if the construction is not level. You can also add an extension for the rails, so you can increase the range of movement. All sets include a user manual, which explains in detail how to install the sliding door system.