Carlson's Choke TubeTubes Coyote Ported Choke Tube Ber/Ben. Made for use with Hevi-Shot Bismuth or lead the Carlson's Coyote Choke Tubes are high performance chokes that produce very dense patterns when ultilizing T and Buckshot loads. The Carlson's Coyote Shotgun Choke Tubes are great for waterfowl and predator hunting and are available to fit a variety of shotgun models. Note: these choke tubes are NOT FOR USE WITH STEEL SHOT Specifications for Carlson's Choke Tubes Coyote Ported Choke Tubes: Manufacturer: Carlson's Choke Tubes Color: Black Fabric/Material: 17-4 Stainless Steel Gauge: 12 Choke Type: Coyote Quantity: 1 Additional Features: Ported Included Accessories: Choke Wrench Country of Origin: USA Features of Carlson's Choke Tubes Coyote Ported Choke Tubes Ported Coyote: Winchester/Browning Invector 12ga Package Contents: Carlson's Choke Tubes Coyote Ported Choke Tubes wrench Carlson's Choke Tubes 30042: Coyote Ported Choke for Ber/Ben