Browning Clay Burner Extended Choke Tube 12 Gauge 20 Steel. The Clay Burner Extended is long on length and even longer on performance. With an extended design and a proprietary differential banded brass gas seal the Clay Burner is easy to remove and install. Scaled in 0.005 increments of constriction there's a Clay Burner choke tube with the constriction you need to adapt to any target presentation. Invector-DS tubes fit only Browning shotguns designed for Invector-DS and are not for use in shotguns showing Invector-Plus or Standard Invector on barrel(s). Specifications for Browning Clay Burner Extended Choke Tube: Manufacturer: Browning Color: Steel Finish: Chrome Fabric/Material: Nickel Chrome Moly Gauge: 12 Length: 4 in Features of Browning Clay Burner Extended Choke Tube Follows industry standard constrictions in 0.005" steps Designed specifically for clay target sports Durable stainless steel construction Highly polished interior finish reduces plastic buildup Extended length tubes are easy to change and add approximately 3/4" to the overall length of the barrel Proprietary differential banded brass gas seal eliminates residue buildup and makes chokes easy to remove and install NOTE: The flat choke tube wrench is not compatible with Invector-DS choke tubes Package Contents: Browning Clay Burner Extended Choke Tube Browning 11304283: Clay Burner Extended Choke Tube 12 Gauge 20 Steel