The Code Black choke tube is engineered to deliver consistent, reliable performance with even patterns and a shorter shot string. Thanks to its patented stud ring design, it produces tighter, more efficient patterns putting more pellets on target at the same time for cleaner, more effective shots. Built for versatility, it is safe to use with a wide range of shot types and performs reliably at extended distances. Product Details Gauge: 20 gauge Constriction (Nominal): Varies Effective Range: 40 to 60 yards Finish: Bronze Titanium Porting: Ported Product Features Engineered for consistent patterns and reliable performance Patented stud ring design shortens shot string for improved impact Produces Full-like patterns with enhanced pellet distribution Effective performance at distances up to 60 yards Safe for use with lead, tungsten, bismuth, steel, and other non-toxic shot Durable Bronze Titanium finish for corrosion and wear resistance Ported design helps improve shot control