Graslon 4336 Snap-On Flat Lens for Insight Flash Diffuser System Softens light and directs it straight ahead, making it especially useful in situations where there are no available bounce surfaces Professional quality won't look out of place with expensive photography gear Secure, easily-removed, no-adhesive mounting system Dimensions: 8 x 5 x 1 in. (20.3 x 12.7 x 2.5cm)