The Carlson's Cremator Non Ported Choke Tube 12 ga. Browning Invector Plus, MR and LR 2 Pack delivers unmatched pattern control with our brand new Triple Shot Technology (TST), featuring three graduated rings in the taper that enable a gradual transition from bore to final constriction for denser, more uniform patterns, reduced pellet deformation, and fewer flyers across waterfowl targets throughout the season. This Cremator series supports no size or speed restrictions with steel shot in any constriction, while offering the benefits of an extended choke tube, including a 25% longer parallel section for tighter patterns, wrench-less installation, quick removal, and enhanced muzzle protection. Available in both ported and non-ported configurations, these tubes are precision-machined from heat-treated 17-4 stainless steel in the USA and carry a lifetime warranty, reflecting Carlson's commitment to durable performance. The design is optimized for the Browning Invector Plus chokes, making them ideal for mid to long-range shooting of waterfowl on diverse setups and conditions. Note: Optima HP and Remington Pro Bore Long Range cannot be used with any steel shot larger than #2. The result is a versatile, reliable upgrade that helps shooters achieve dense, consistent patterns with steel shot across a variety of waterfowl hunting scenarios.