The Carlson's Delta Waterfowl Extended Choke Tubes for Browning Invector Plus MR, 20ga, 2 pack are crafted from 1704 stainless steel to deliver tighter, denser patterns than conventional chokes. Featuring a 25% longer parallel section, these chokes promote more consistent shot distribution at range, making them an excellent choice for waterfowl applications where pattern density matters most. Each choke tube is knurled at the end for quick, tool-free removal and carries laser-marked constriction and size on the end and body for fast reference in the field. A steel shot option is supported with exceptional results, though care should be taken to avoid steel larger than BB or speeds exceeding 1550 FPS with the Long Range constriction; loads outside these parameters are best paired with the Mid Range choke. Built in the United States with a durable black finish, these extended chokes are designed to work specifically with Browning Invector Plus MR configurations for 20 gauge and offer reliable performance in demanding waterfowl conditions. The Carlson's Delta Waterfowl line is trusted for its precision, durability, and unmistakable value when optimizing patterning and shot string management on the strip.