The RED Rotating Filter Tray (138mm) was designed to fit your 138mm circular filters, diopters, or polarizers. The tray takes up 2 filter slots and features a small thumbwheel at the top to rotate your filter within the tray quickly and easily.
WARNING: This product may expose you to chemicals which are known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov