The Carlsons Cremator Mid Range Retay 174 SS Ported choke tube is crafted from durable 17-4 stainless steel ensuring longevity and reliability in the field. Designed with the innovative Triple Shot Technology this choke tube features three graduated rings that provide a smooth transition from the shotgun bore to the final constriction resulting in minimal pellet deformation and fewer flyers. The mid-range constriction offers a constriction diameter of .707 delivering dense and consistent patterns that are perfect for targeting waterfowl across various distances. With no size or speed restrictions on steel shot this choke tube is a versatile addition to your shooting gear enhancing performance throughout the hunting season.