The Carlson's Cremator Non-Ported Choke Tube Set gets you ready for a variety of waterfowl hunting situations with 1 mid-range choke and 1 long-range choke. The choke tubes feature 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 Tubes are constructed from premium 17-4 stainless steel. Includes choke tube wrench. 1 mid-range choke and 1 long-range choke Triple Shot Technology Reduced pellet deformation Shortened shot string 17-4 stainless steel Includes wrench