The Carlson's Delta Waterfowl Choke Tubes for Winchester MR and LR, 20ga, 2 pack, are crafted from 1704 stainless steel to deliver tighter, denser patterns and improved long-range performance for waterfowl hunting. Featuring a 25% longer parallel section, these chokes promote more consistent patterns at varied distances, while a knurled end allows quick, tool-free removal in the field or at the range. Each choke tube has its constriction and size laser marked on the end and body for fast reference, so you can confidently select the right tube for your shot string. Designed to handle steel shot with exceptional results, these chokes are optimized for waterfowl loads, with explicit guidance to avoid steel BB or any steel load over 1550 FPS through the Long Range constriction; loads that exceed this size and speed should be paired with the Mid Range choke for optimal performance. Carlson's Delta Waterfowl chokes are backed by a lifetime warranty, reinforcing their dedication to durability and consistent patterns. Engineered to fit Winchester, Browning Invector, Mossberg 500, Weatherby pre-1993, Ruger Red Label, and related platforms, with compatibility notes for Winchester SX-2, SX-3, and SXP using Browning Invector Plus tubes, these chokes blend rugged construction with precise craftsmanship to enhance waterfowl success while maintaining straightforward, field-ready usability.