The Roloff/Matek Component Catalog combines essential information that buyers, engineers in practice and study, as well as technical sales, need for their work: current company and contact details, along with an overview of the product portfolio. The catalog specifies the manufacturers' products according to selected features required for design work. This makes the data comparable and visible. When a designer is looking for a suitable component with specific characteristics, they can find relevant offers concentrated in this catalog and can directly send an inquiry to the manufacturer. This shortens the extensive comparisons and the search for the optimal construction and machine element among the numerous manufacturer catalogs. The component catalog is published as a supplement to the well-established textbook Roloff/Matek, Machine Elements, used in study and practice.