Profoto OCF II Gel RingThe magnetic OCF II Gel Ring has been created to help you create a whole array of color based special effects with gels. Just separate the inner and outer ring and use the inner ring as a template. Then, cut your gel from your gel sheet of choice, snap the inner and outer ring together and youre ready to go. The gel ring attaches directly onto the OCF II Grid and Gel Holder or the OCF II Barndoor. It can be clicked on and off in seconds. For even more