This accessory allows you to view two flat panel screens sidebyside with a pivot or swing arm wall or desk mount. Attach to Chief Kseries swing arm wall or desk mounts to view two flat panel screens sidedbyside Provides independent screen adjustments Centris TurnTite Dials lock screen adjustments in place Compatible for screens with VESA 75 x 75 mm or 100 x 100 mm compliant mounting patterns