The award-winning Goblin Thunder Choke Tube is the original extended ported shotgun choke, designed to deliver exceptional performance. When paired with the right combination of shell, pellet and choke constriction, the Goblin Thunder reliably achieves a 14 inches to 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 represent the highest quality shotgun chokes on the market today. Featuring a unique conical/parallel internal design along with exclusive outward angled diagonal ports, these chokes improve pattern density by up to 20%. The extended ported section also enhances follow-up shots, making them faster and more accurate by significantly reducing recoil and muzzle jump. Upgrade your shotgun setup with the Goblin Thunder Choke Tube for unmatched reliability and performance in the field.