The "606" bent Billiard is one of the most familiar and venerated shapes in the Savinelli lineup, even having been used in the heralded 125th Anniversary series. Each briar of the Tortuga series sports not only a tortoiseshell-patterned stem, but also a domed, shell-like cap with a foam-rubber stopper. The purpose of the latter is to preserve an unfinished smoke which one wishes to pick up again and finish later. Comes with pack of 6mm Balsa Filters & non filter adapter. Made in Italy.