Flush mount, stainless steel Carlson's Improved Cylinder 12 Gauge Win-Choke tubes are compatible with various shotguns using the Win-Choke thread size.
These choke tubes can handle magnum and steel shot loads, with specific models for lead shot or Hevi-Shot only.
Made from 1704 heat-treated stainless steel, they are available in 12 and 20 gauge with appropriate thread patterns for compatibility.