Carlson's Browning DS TSS Turkey Choke Tube 12 Gauge 0.665" Extended Tube Matte Blue Carlson's choke tubes are among the best in the business, and provide dependable service for a lifetime to their owners. High quality steel and tight tolerances ensure the best possible patterns in all of your shotguns. Carlson choke tubes will never let you down! Carson's new TSS Turkey Choke tubes are made to give you the best pattern with Federal Premium Heavyweight TSS Turkey loads but work well with other smaller size shot turkey loads as well, from 7 to 9. This choke tube is made to put the maximum shot in a 10" circle at 40 yards. Specifications and Features: Carlson's 38025 TSS Turkey Choke Tube 12 Gauge Constriction Turkey Diameter 0.665 Extended Tube Extends approximately 1" past barrel Designed to be used in conjunction with Federal Premium Heavyweight TSS Turkey Load Works with all smaller shot size (7-9) turkey loads Matte Blue Fits: Browning Invector DS Choke tube Browning 2013/A5/725 Citori Note: Not for use with steel shot