BrÃ¼der Mannesmann AG operates as a management and financial holding company, which engages in the trading of hardware products. It operates through the Tools and Fittings business segments. The Tools segment offers hand and power tools for the wholesale trading, do-it-yourself stores, and mail-order business. The Fittings segment markets valves and pipings for environmental engineering; supply technology; and industrial applications. The company was founded by Alfred Mannesmann and Carl Mannesmann on July 14, 1931 and is headquartered in Remscheid, Germany.