Carlson's Choke Tubes are available for most shotgun models and serve as a perfect replacement to damaged, worn out or misplaced factory choke tubes. Carlson's Choke Tubes are manufactured from corrosion resistant 17-4 PH Stainless Steel, and are backed with a lifetime warranty. Designed for use with Hevi-Shot but any lead, nickel, or copper platted load can be used, this high performance choke tube has been specifically designed for the coyote hunter to deliver devastating down-range patterns upwards of 70 yards when shooting Dead Coyote "T" shot. Carlson's finds that the Dead Coyote by Hevi-Shot, Heavy Weight Coyote by Federal, and #4 buck pattern the best through this choke tube. This tube is not for use with Steel shot. The Dead Coyote choke is also a great waterfowl choke for those hunters using Hevi-Shot loads for long range shooting.Notes: Not for use with steel shot.