Carlson's Choke Tubes Extended Turkey Choke Tube Beretta/Benelli 20 Gauge. These Choke Tubes by Carlson's Choke Tubes produce extra tight patterns with copper-plated and buffered lead turkey shotshells. The Carlson's Turkey Shotgun Choke produces dense patterns and carry a lifetime warranty. The Carlson's Choke Tubes Extended Turkey Chokes extend approximately 1in from the end of the barrel. These Carlson's Shotgun Chokes have a matte blue finish and should not be used with steel shot. Specifications for Carlson's Choke Tubes Extended Turkey Choke Tube: Manufacturer: Carlson's Choke Tubes Color: Black Choke Type: Turkey Extended Quantity: 1 Condition: New Country of Origin: USA Features of Carlson's 12 Gauge Extended Choke Tube for Turkeys: Tightens the pattern of your shot Knurled end for simple removal and attachment Constriction is etched on the side Should not be used w/ steel shot Package Contents: Carlson's 12 & 20 Gauge Extended Turkey Choke Tubes Carlson's Choke Tubes Extended Turkey Choke Tube Beretta/Benelli 20 Gauge 10304