The Carlson's Sporting Clays Choke Tubes for 12 ga Browning Invector Plus Full are precision machined from 17-4 stainless to deliver patterns superior to standard chokes, with a 25% larger parallel section that produces more consistent results and tighter, denser patterns than flush mount options. Each choke is knurled on the end for quick removal and laser marked at the end with the constriction for easy reference in the field or on the range. Backed by a lifetime warranty, these choke tubes are designed to handle a range of shot types including lead, steel, copper-plated, nickel, Hevi-Shot, and buckshot, with the caveat that steel shot larger than BBS should not be used in any choke tighter than Full Constriction. The longer parallel section contributes to improved pattern consistency, making them ideal for Sporting Clays and field testing where repeatable results matter. This model fits all Browning Invector-Plus 12 gauge choke systems and is manufactured in the United States, conveying Carlson's commitment to quality and performance. Whether youre dialing in your bird, testing different loads, or chasing that perfect clay pair, these choke tubes provide reliable, repeatable performance with a focus on pattern integrity and ease of use.