Carlson's Coyote Choke Tubes are for use with Hevi-Shot, Bismuth or lead, this high performance choke tube has been specifically designed for the coyote hunter to deliver devastating downrange patterns upwards of 70 yards when shooting larger shot sizes. Produces very dense patterns when utilizing T and #4 Buckshot loads. Great for waterfowl and predator hunting. *NOTE- Not for use with steel shot. Type Choke Tube Gauge 12 Gauge Finish Black Ported Yes Series 30044 Material 17-4 Stainless Steel Configuration Rem Choke Chokes Included 1 Recommended For 70 yds Constriction Type Coyote