The Lastolite Strobo Kit is a lightweight, cost-effective way to take that "on-camera flash" look out of your on-camera flash. The kit comes with a universal smart holder that wraps around the flash head and accepts accessories via a magnetic holder.
The included masks help you block or contour portions of your flash beam while the 2 grids narrow and focus it into a spot. Full, 1/2 and 1/4 CTO and CTB gels allow you to warm and cool the light output to balance it with ambient light conditions, while red, yellow, blue and green gels are provided for creative color. There's also a 0.6 (2 stop) ND and a diffusion filter. The accessories can be used alone or in any creative combination.