Truglo Head Banger Invector Plus Turkey Choke Tube Features: Rated for the top high performance turkey loads and features a multi-groove technology to guide the wad and pellets into a tight and consistent pattern. Shot after shot you can count on this choke to hold your pellets together. Truglo Head Banger Invector Plus Turkey Choke Tube Specifications: Fits: Browning Invector Plus; Win. Super X2/X3/Supreme; Sako/Tikka Truglo TG187X Head Banger Choke Tube 12 Gauge Constriction 0.665 Multi-Phase Groove Technology Engages the Wadding and Guides the Pellets into a Tight and Consistent Pattern Shot after Shot Extend Your Effective Range with Lethal Patterns That Reach Out Farther Rated For HevioShot Winchester Long Beard XR Federal Premium 3rd Degree and Other High Performance Turkey Loads Heat-Treated Steel for Better Durability with Powerful Turkey Loads CNC-Machined For Optimum Precision Polished End Face for Better Seating and Sealing