Our Waterfowl Extended Choke Tubes, crafted from durable 1704 stainless steel, are engineered to deliver tighter, denser patterns than traditional Choke Tubes. With a 25% longer parallel section, these tubes provide more consistent shot patterns. Each tube is knurled at the end for easy, tool-free removal and is laser-marked with constriction and size for quick reference. Designed to handle steel shot, they perform exceptionally well; however, avoid using steel shot larger than BB or loads faster than 1550 fps through the Full (Long-Range) Constriction and do not use slugs or sabots in any choke tighter than Improved Cylinder. To achieve optimal performance, pattern your shotgun with the specific shotshell load you intend to use, as patterns vary by brand. Comes in Mid-Range for 25 - 40 yd shots and Long-Range for 40 yards and beyond, these chokes are backed by Carlson's lifetime warranty, offering superior patterning and durability for dedicated waterfowl hunters.