The lee seven5 out of town set consists of the following 1x lee seven5 06 2 stop nd soft grad filter 1x lee seven5 09 3 stop nd hard grad filter and 1x lee seven5 big stopper 10 stop filter all three 75x90mm filters are made out of high quality glass and designed to reduce the amount of light reaching the sensor which allows the use of slower shutter speeds by increasing the length of exposure time you can create a ghostly time passing effect of anything that moves for example the