Denicotea filter of only 6mm in diameter they are ideal to replace those of peterson or chacom cigarette holders. can also filter smoke from pipes be careful to check the length of the slot in the pipe. . mark . denicotea. colors . transparent and red filter. specificities . denicotéa slim filters 6mm x 10: . . set of 10 filters. 1 filter allows you to smoke approximately 10/15 cigarettes. . dimensions. filter: diameter x length (mm) 6 x 37 mm.