The Carlsons Cremator Ported Choke Tube 20 ga. Remington MR, LR 2 pk. delivers advanced performance with Carlsons Triple Shot Technology (TST), featuring three graduated rings in the taper that create a gradual bore-to-constriction transition to reduce pellet deformation, minimize flyers, and produce denser patterns for reliable waterfowl effectiveness across the season. This Cremator series imposes no size or speed restrictions with steel shot across its three constrictions, while the extended design provides a 25% longer parallel section for tighter, more uniform patterns and easier muzzle protection, all with wrench-less installation and quick removal. Offered in ported or non-ported configurations, these tubes are precision-machined from heat-treated 17-4 stainless steel in the USA and backed by Carlsons lifetime warranty, ensuring rugged durability and long-term reliability in demanding field conditions. The Cremator line emphasizes versatility for mid to long-range shooting while maintaining strength and pattern control, making it ideal for waterfowl hunters who demand consistency, repeatable precision, and straightforward maintenance. Note: Optima HP and Remington Pro Bore Long Range cannot be used with any steel shot larger than #2.