WPC handles are characterized by a rectangular shape, allowing for the attachment of cables even in areas with limited access. The self-locking mechanism of the handle prevents the cables from coming out of the holder uncontrollably. The anchor fastening allows for easy and quick installation in a drilled hole. WPC handles allow for the use of a minimum of available space. Therefore, they are used in hard-to-reach places. An example is the installation in distribution frame profiles.