This is the Sealife Flex-Connect Single Tray with Mounting ScrewFeatures: Use the Single Tray to add a light or flash to your underwater camera Instantly add grips, lights, flashes and Flex Arms to the Single Tray with just a "click!" and remove them with the push of a button Mounts to all cameras with a standard 1/4-20 tripod mount Includes mounting knob Expand your underwater camera Use the Flex-Connect Single Tray to easily expand your underwater camera with an external light or flash. Mount a light directly to the tray, or add a Flex-Connect Grip or Flex Arm for increased control and comfort. Attaches to any underwater camera with a standard 1/4-20 tripod mount. Includes mounting screw. "