Good quality cigarette holder with integrated, replaceable 9mm Denicotea crystal filter as well as a ejector mechanism with which the cigarette butt can be removed from the holder cup by pulling the cup back. Unscrew this device to reveal the clever tube of crystals which filters out the tar and nicotine from the tobacco smoke as you inhale. Change the filter as required. Uses the standard Denicotea filter cartridges. This cigarette holder only comes with the 10 regular filters included in the gift box and not any more so please order more separately if required. The filter measures 10 cm (4") long by 1.1cm (0.43") wide. This model is suitable for normal size cigarettes like the ones that come straight from a packet. Length of the holder is 100 mm and you can use 9mm filters with this holder.