Carlson's Choke Tubes precision and durability for lifetime performance. Carlson's Choke Tubes are renowned in the shooting industry for their lifetime reliability and superior performance. Made from high-quality 17-4 heat treated stainless steel, these choke tubes are engineered with precision and tight tolerances to deliver optimal shot patterns across all shotguns. This model is a full choke designed for a seamless flush fit, ensuring both aesthetic appeal and functional efficiency. Compatible with both steel and lead shot, Carlson's Choke Tubes offer versatile use. However, it is important to avoid using steel shot larger than BB in any choke tighter than modified to maintain performance and safety. For BB and smaller size steel shot, the full choke constriction is ideal, providing consistent and accurate results.