Cigarette tubes are pre-rolled cigarette paper usually with an acetate or paper filter at the end.
They have an appearance similar to a finished cigarette but are without any tobacco or smoking material inside.
The length varies from what is known as King Size (84mm) to 100's (100mm).
[1] The United States Tobacco Taxation Bureau defines a cigarette tube as "Cigarette paper made into a hollow cylinder for use in making cigarettes.
Russian old style papirosa cigarette tube[4] can also be filled with cigarette stuffer [de] .