Carlson's Cremator Choke Tubes incorporate innovative triple shot technology (TST) and are comes in close, mid and long-range constrictions. This advanced design features three graduated rings in the taper section of the choke tube, allowing for a smoother transition from the shotgun bore to the final constriction. As a result, you'll experience reduced pellet deformation, fewer flyers and denser patterns, making the Cremator series highly effective for all types of waterfowl throughout the entire season. The Cremator series imposes no size or speed restrictions for steel shot across any of the three constrictions. Additionally, these Choke Tubes offer the advantages of an extended design, including a 25% longer parallel section for tighter and more consistent patterns. They are designed for wrench-less installation and quick removal, providing convenience while also protecting the muzzle. Comes in both ported and non-ported configurations, Carlson's Cremator Choke Tubes are precision-machined from heat-treated 17-4 stainless steel and proudly made in the U.S.A. Each tube comes with a lifetime warranty, ensuring reliability and quality. Upgrade your shooting experience with the Cremator series, where cutting-edge technology meets exceptional performance.