Winchester Extended Turkey Choke Tubes 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. Note: Not for use with steel shot. - Caliber: Winchester 12 Gauge - Constriction: Turkey - Diameter: .670
