Carlson's Turkey Extended Choke Tube for 12 ga Browning Invector Plus .655 SPECIFICATIONS BRAND: CARLSON'S BRAND FAMILY: TURKEY CA PROP 65: YES CA PROP 65 CHEMICAL: VINYL CHLORIDE CHOKE DIAMETER: .655 COLOR: BLACK GAUGE: 12 GA WEAPON MFG: BROWNING DESCRIPTION Carlson’s Extended Turkey Choke Tubes extend approximately 1” from the end of the barrel. They are manufactured from 17-4 heat treated stainless steel and have a matte blue finish. Carlson’s Extended Turkey Choke Tubes feature a 1.050” parallel section to produce the optimum pattern with your shotgun. Lead, Copperplated, Nickel, Hevi-Shot, or Bismuth may be used in these choke tubes. Comes with “Free” Choke tube wrench!