Carlson's Cremator Choke Tubes are designed with innovative triple shot technology (TST), comes in close, mid and long-range constrictions. This advanced design features a series of three graduated rings in the taper section, allowing for a smoother transition from the shotgun bore to the final constriction. This results in reduced pellet deformation, fewer flyers and denser shot patterns, making the Cremator series highly effective for all types of waterfowl throughout the season. The Cremator series imposes no size or speed restrictions for steel shot across all three constrictions. Additionally, these Choke Tubes offer all the advantages of extended choke designs, including a 25% longer parallel section for tighter, more consistent patterns, as well as wrench-less installation and quick removal for ease of use. Comes in both ported and non-ported configurations, Carlson's Cremator Choke Tubes are precision-machined from heat-treated 17-4 stainless steel, ensuring durability and performance. Proudly made in the U.S.A. and backed by a lifetime warranty, the Cremator series Choke Tubes are the ideal choice for shooters looking to enhance their shooting experience with quality and reliability.