The award-winning Goblin Thunder Choke Tube is the original extended ported shotgun choke, designed for exceptional performance. When matched with the right combination of shell, pellet and choke constriction, the Goblin Thunder reliably delivers a consistent 14 inches-16 inches pattern at 40 yd. Crafted from 17-4 PH grade stainless steel, these chokes are precision-machined to high tolerance standards using advanced computer-controlled equipment, ensuring top-tier quality. The Goblin Thunder features a unique conical/parallel internal design and exclusive outward angled diagonal ports, enhancing 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. Upgrade your shotgun setup with the Goblin Thunder Choke Tube for unparalleled reliability and shooting performance.