The Profoto OCF II Gel Ring makes it easy to add color filters of any kind to a Profoto off camera flash (OCF). Profoto has a variety of different color gels, with integrated magnetic mounts. For additional creative options outside the scope of their pre-made offerings, the OCF II Gel Ring allows for cutting and mounting customized colors. It attaches with magnets on to the OCF II Grid & Gel Holder or the OCF II Barndoor, and is easy to stack with the OCF II Grids.