The Carlson's Flush Full Extra Choke Tube for Remington 20ga .585 is crafted from 17-4 heat-treated stainless steel to deliver durable performance in the Rem Choke system, precisely engineered for Remington shotguns to achieve a clean, flush fit and consistent patterning. This full-constriction choke is designed for a wide range of loads, with steel, lead, and hevi-shot usable in all constrictions except that choke tubes tighter than full should not use steel shot larger than BB or speeds over 1550 fps, and Turkey Choke Tubes should not be used with steel larger than #4. Made in the USA and backed by Carlsons Lifetime Warranty, it combines reliability with long-term value for hunters and target shooters alike, ensuring you can trust your choke to perform under demanding field conditions. Whether youre chasing ducks, upland birds, or turkey, this flush fit choke tube provides the ideal balance of constriction for precise shot placement, enhanced pattern density, and versatile load compatibility, making Carlsons 51205 a smart upgrade for Remington 20ga enthusiasts seeking consistent performance and enduring quality.