Although it is one of the most advanced, effective and interesting filling systems, which has all the advantages of other breather tube systems and none of the problems related to the presence of flexible rubber membranes, the ''"stantuffo tuffante"'' unfortunately had a low diffusion, which sees it limited in its use to the [[Dunn]] pens and the aforementioned model [[Lucens]] of [[OMAS]].<noinclude> | Although it is one of the most advanced, effective and interesting filling systems, which has all the advantages of other breather tube systems and none of the problems related to the presence of flexible rubber membranes, the ''"stantuffo tuffante"'' unfortunately had a low diffusion, which sees it limited in its use to the [[Dunn]] pens and the aforementioned model [[Lucens]] of [[OMAS]].<noinclude> |