Kick's Gobblin' Thunder Turkey Choke Tube for 12 ga Beretta/Benelli .660 SPECIFICATIONS BRAND: KICK'S INDUSTRIES CA PROP 65: YES DESCRIPTION The award winning Goblin’ Thunder Choke Tube is the original extended ported shotgun choke. With the right combination of shell, pellet, and choke constriction, Gobblin’ Thunder dependably delivers a 14"-16" pattern at 40 yards. 17-4ph Stainless Steel Chemically Blackened Round Angle-ported Extension Choke Extension Is Approximately 1 1/2” Long Unique Conical / Parallel Interior Design Denser, More Consistent Patterns Recoil Reduction Muzzle Jump Reduction Wrench Required Size Labeling Based On Inside Diameter Measurement