The Carlson's Delta Waterfowl Choke for Winchester MR and LR 12ga 2-pack delivers tighter, denser patterns with 1704 stainless steel construction and a 25% longer parallel section for increased consistency, making it an ideal choice for waterfowl setups where? patterns matter. These chokes feature a knurled end for quick removal and laser-marked constriction and size on both the end and body, ensuring easy reference in the field or at the range. Steel shot is supported with exceptional results, though users should avoid steel larger than BB or speeds above 1550 FPS with the Long Range constriction, reserving higher-demand loads for the Mid Range tube. The Delta Waterfowl chokes are backed by Carlson's lifetime warranty, underscoring durability and long-term performance. Designed to fit popular configurations such as Winchester Browning Invector Mossberg 500 Weatherby Pre 1993 Ruger Red Label, with Winchester SX-2, SX-3, and SXP using Browning Invector Plus tubes, these chokes are built to deliver reliable, repeatable patterns across a variety of waterfowl applications.