The Carlson’s® Cremator™ Non-Ported Choke Tube Set gets you ready for a variety of waterfowl hunting situations with 1 mid-range choke. The choke tube features Triple Shot Technology™ (TST) that utilizes two graduated rings in the parallel section of the tube, resulting in a more gradual transition from the shotgun bore to the final constriction for reduced pellet deformation, a shortened shot string, and less flyers. Cremator Choke Tube is constructed from premium 17-4 stainless steel.