The screwdriver, a simple yet vital tool, has evolved through innovation. Robertson’s square drive (1908) prevented slippage, Phillips’ cross-head (1936) enabled self-centering for automation, Allen’s hex (1910) provided precise torque, and Torx (1967) offered superior grip. Tailored for tasks from electronics to construction, screwdrivers reflect centuries of engineering brilliance, reshaping industries with every secure fastener. #Screwdrivers #Innovation #Tools #Engineering