Josef Kihlberg JK 590 industrial staples are for use in the Josef Kihlberg 590 triwall plier stapler. The JK 590 triwall staples have an increased length to push through the triwall corrugated. Closing boxes made of triwall is notoriously difficult. The Josef Kihlberg 590 industrial stapler can change that into an fast and efficient part of your operations. Box Stapler Supply has a wide selection of industrial staplers and staples.