Manufacturer: Carlson's 81004
These chokes are made of 17-4 heat treated stainless steel. Steel or lead shot may be used in these choke tubes. Steel shot larger than #BB should not be used in any choke tighter than modified. BB and smaller size steel shot may be used through full choke constriction.
Specifications and Features:
Huglu 20 Gauge
Constriction: Improved Modified