Product Description The Carlson&';s Choke Tubes Remington Sporting Clays Choke Tube is precision machined from 17-4 stainless steel to deliver superior patterning performance over standard choke tubes. Engineered for 20-gauge Remington shotguns, this Improved Modified choke tube features a .595 diameter and a 25% larger parallel section, producing tighter and more consistent patterns than conventional flush-mount choke tubes. Each tube is knurled on the end for quick and effortless hand removal, while the constriction designation is laser marked on the end for instant identification at a glance. Compatible with lead shot, steel shot, copper-plated shot, nickel shot, Hevi-Shot shells, and buckshot, this tube is built for versatile sporting clays performance and is backed by Carlson&';s lifetime warranty. Note: Steel shot larger than BB should not be used in any Sporting Clays Choke Tube tighter than Full Constriction. Product Highlights Precision machined from 17-4 stainless steel for long-lasting durability and consistent performance 25% larger parallel section throws tighter, more uniform patterns than conventional choke tubes Knurled end design allows for fast, tool-free removal in the field Constriction laser marked on the tube end for quick and easy identification Compatible with lead, steel, copper-plated, nickel, Hevi-Shot, and buckshot loads; covered by a lifetime warranty Specs Brand: Carlson&';s Choke Tubes Gauge: 20 Gauge Choke Type: Sporting Clay Constriction: Improved Modified Diameter: .595" Material: 17-4 Stainless Steel End Style: Knurled Warranty: Lifetime MPN: CRL13376 UPC: 723189133764 Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product&';s manufacturer.