The OCF II Gels allow you to be super-creative with color on the move. Have fun with colors that range from Rose Pink, Jade and Yellow to Peacock Blue, and naturally balance flash with ambient light with CTO gels, Quarter CTB gels, and Half Plus Green. The magnetic gels attach directly onto the OCF II Grid & Gel Holder or the OCF II Barndoor. They can be clicked on and off in seconds. For even more creative possibilities on the move, stack them with OCF II Grids.