Snow Goose Cremator Choke Tubes feature our brand new Triple Shot Technology, and is offered in close, mid, and long range constrictions. TST is a series of three graduated rings in the taper section of the choke tube, that allow a more gradual transition from the shotgun bore to the final constriction. The Cremator series conveys a host of benefits to the shooter, like reduced pellet deformation, less flyers, and denser patterns. The Cremator series has no size or speed restrictions, with steel shot in any of the three constrictions. You also get all the benefits of an extended choke tube, including a 25% longer parallel section for tighter and more dense patterns, wrench-less installation, quick removal, and muzzle protection. They are offered in your choice of ported or non-ported configurations. Like all of our tubes, the Cremator series carries a lifetime warranty, and are constructed out of our premium 17-4 stainless steel.