Carlson's Long Beard Ported Turkey Beretta/Benelli Mobil 12ga .650 Choke Tube is manufactured from 17-4 stainless steel and has been specially designed to produce the best patterns when shooting Winchester�s new long beard-tm xr turkey loads. This new ammunition features shot-loktm technology that allows for the tightest patterns and longer downrange reach over any turkey load on the market. Pair this ammunition�s capabilities with Carlson�s Long Beard TM XR turkey choke and you have a devastating, gobbler-killing combination. This choke tube features a 25 percent longer parallel section thus throwing tighter and denser patterns downrange.