The lee seven5 urban set contains the following 75x90mm lee seven5 filters 1x 06 2 stop nd soft grad 1x 09 3 stop nd soft grad and 1x lee big stopper10 stop nd the lee neutral density graduated filters with soft graduation allow you to balance light intensity in one part of a scene without affecting colour balance for example when photographing a landscape in which the sky is much brighter than the foreground placing the neutral density part of the filter onto the sky in the frame