Photogels Strobist Color Correction Gels Kit #2, 7 Gels Pre-cut to 2x5" for all Speedlight Flashes 7 gels for Color Correction CTO in Full, 1/2, 1/4 and 1/8 strengths CTO in 1/8 strength CTB in 1/8 strength Plusgreen in 1/8 strength