The Carlson's Cremator Mid-Range Ported Choke Tube is a purpose-built 12-gauge waterfowl choke for shotguns using the standard Winchester Win-Choke, Browning Invector or Mossberg Accu-Choke thread pattern. This specific model has a .715-inch constriction and an extended configuration that places a portion of the tube beyond the muzzle, allowing convenient installation and removal without a choke wrench while also helping protect the end of the barrel. Its matte black finish provides a subdued appearance that pairs naturally with field shotguns. Carlson's machines the tube in the United States from heat-treated 17-4 stainless steel and backs the Cremator series with a lifetime warranty. The internal design incorporates Triple Shot Technology, which uses three graduated rings through the taper to provide a more gradual transition from the shotgun bore to the final constriction. That controlled transition is designed to reduce pellet deformation and stray pellets while supporting dense, consistent patterns for practical mid-range waterfowl hunting. A parallel section that is 25 percent longer than that of a conventional flush tube further supports the extended design's patterning characteristics. Ports near the exposed end help manage muzzle movement and felt recoil during firing. This mid-range model is approved for steel shot without shot-size or velocity restrictions, making it suitable for modern non-toxic waterfowl loads. It can also serve hunters who want a versatile pattern between close-range and long-range Cremator constrictions. Choke systems can vary among shotguns from the same manufacturer, so the barrel's required thread pattern should always be confirmed before installation. In particular, Winchester SX2, SX3, SX4 and SXP shotguns use Browning Invector-Plus tubes rather than this standard Invector and Win-Choke configuration.Specifications and Features: 12-gauge mid-range waterfowl choke with .715-inch constriction Fits Browning Invector, Mossberg Accu-Choke and Winchester Win-Choke systems Extended, ported configuration Triple Shot Technology with three graduated taper rings 25% longer parallel section for dense, consistent patterns Heat-treated 17-4 stainless steel construction Matte black finish Approved for steel shot with no shot-size or velocity restrictions Wrench-free installation and removal Made in the USA Brand: Carlson's Choke Tubes Series: Cremator Product Type: Extended Ported Choke Tube Manufacturer Part Number: 11545 UPC: 723189115456