The award-winning Goblin Thunder Choke Tube is the original extended ported shotgun choke, designed for unparalleled performance. When used with the right combination of shell, pellet and choke constriction, the Goblin Thunder reliably produces a 14 inches-16 inches pattern at 40 yd. Precision-machined to high tolerance standards using advanced computer-controlled equipment, Goblin Thunder chokes are crafted from 17-4 PH grade stainless steel, ensuring they are among the highest quality shotgun chokes available today. The unique conical/parallel internal design, combined with exclusive outward angled diagonal ports, enhances pattern density by up to 20%. Additionally, the extended ported section allows for faster follow-up shots and improved accuracy by significantly reducing recoil and muzzle jump. Elevate your shotgun's capabilities with the Goblin Thunder Choke Tube for exceptional reliability and performance in any shooting situation.