Activated charcoal filters with the Savinelli brand. These filters have a diameter of 6mm and have been designed for pipes with a 6mm hole diameter in order to be used as an alternative to balsa filters. This filter has been specifically designed for the technical characteristics of Savinelli pipes: it is 37 mm long just like our balsa filter, thus avoiding moving during smoking. The filters are sold in an elegant tin box of 100 pieces. Single filter dimensions: length 37 mm, diameter 6mm.