The Rogue Gels Universal Lighting Filter Kit (Set of 20) from ExpoImaging makes it easy to bring a more dramatic color sense to all of your photographs. Chose from a variety of Lee filters for reds, yellows, blues, and greens to punch up an image with color, or create mood. Or, use the correction gels to balance your flash to ambient light. Flash coverage area measures 3 x 2.5" (7.6 x 6.3 cm)--total filter length with tabs is 6" (15.2 cm)