The award-winning Goblin Thunder Choke Tube is the original extended ported shotgun choke, designed for outstanding performance. When paired with the right combination of shell, pellet and choke constriction, the Goblin Thunder consistently delivers a reliable 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 the highest quality available on the market today. Featuring a unique conical/parallel internal design along with exclusive outward angled diagonal ports, these chokes enhance pattern density by up to 20%. Additionally, the extended ported section improves follow-up shot speed and accuracy by significantly reducing recoil and muzzle jump. Elevate your shotgun's capabilities with the Goblin Thunder Choke Tube for superior performance and reliability.