Carlson's Cremator Choke Tubes offer advanced performance with the innovative triple shot technology (TST) and are comes in close, mid and long-range constrictions. TST features a series of three graduated rings in the choke's taper section, allowing for a smoother transition from the shotgun bore to the final constriction. This design minimizes pellet deformation, reduces flyers and produces denser shot patterns, making the Cremator series highly effective for all types of waterfowl hunting throughout the season. The Cremator chokes come with no size or speed restrictions for steel shot, ensuring versatility in any of the three constrictions. These Choke Tubes also provide the benefits of an extended choke, including a 25% longer parallel section for tighter patterns, wrench-less installation, quick removal and added muzzle protection. Comes in both ported and non-ported configurations, each Cremator Choke Tube is precision-machined in the U.S.A. from heat-treated 17-4 stainless steel, backed by a lifetime warranty. For compatibility with your shotgun, be sure to consult our detailed interchange guide.