A7 index card file A-Z. Made of plastic. Color: Gray. Format: A7. In a 5-piece set, a total of 25 pieces. Packaged in a clear plastic bag. Ideal for sorting A7 format index cards. High-quality stationery products made in Germany. The Brunnen brand was established in 1894 and originated from the paper processing company Baier & Schneider in Heilbronn, north of Stuttgart. The founders recognized early on the importance of paper and the roll liner machine. During the interwar period, the brand established itself and sold its business and notebooks very successfully. A decade after World War II and the reconstruction of the destroyed company site, the demand for paper products began to rise rapidly. Today, the company is run by a great-grandson and a great-great-grandson of the founder. In addition to notebooks, calendars, and other stationery items, a wide range of other office and school supplies has since been added. However, what has not changed is the company philosophy: Brunnen remains open to new ideas and is committed to continually impressing customers with the high quality of its products.