Box of 250 ocb extra tubes.. these tubes have a 50% longer filter compared to the other tubes.. this makes it possible to use 10% less.. . mark. ocb. . contents. 1 x box of 250 ocb extra tubes. . specificities. quality paper. tube with filter (long: + 50%). - 10% of tobacco used per cigarette. . dimensions. length x diameter (cm). 8.4 x 0.82cm