Features Triple Shot Technology (TST) with three graduated rings for smoother transition and reduced pellet deformation; Available in close, mid, and long-range constrictions; Offers more dense patterns with less flyers; No size or speed restrictions for steel shot; Extended choke tube with 25% longer parallel section; Wrench-less installation and quick removal; Available in ported or non-ported configurations; Made from heat-treated 17-4 stainless steel; Made in the USA