The Undertaker Super Full Turkey Choke Tube, model number Hunters Specialties 00660, is a high-caliber component specifically designed and rigorously tested to deliver optimal performance by producing super full choke patterns. Made from 41L42 Chrome Moly - a top-of-the-line aircraft quality alloy, this unit goes through a heat-treating process to handle high-stress loads. It also boasts a sleek blued finish for enhanced aesthetic appeal.The incorporation of a knurled end enhances ease of hand installation and successful removal. This choke tube is exclusively for the use of lead and copper-plated lead shot.