Carlson's Cremator Ported Choke Tubes come with a long-range choke, mid-range choke, and a free wrench, ensuring that you're set up for a variety of hunting scenarios. TST technology provides a stair-step-like transition to the final constriction, reducing pellet deformation and producing a consistent pattern. The ported design reduces muzzle jump so you can stay on target for follow-up shots. Mid-range choke is best for shots between 20 yds. to 40 yds., while long-range choke delivers excellent consistency beyond 40 yds. Carlson's Cremator Ported Choke Tubes are compatible with lead, steel, and Hevi-Shot loads. Includes long-range and midrange shotgun chokes and wrench TST technology reduces pellet deformation Ported to reduce muzzle jump Accepts lead, steel, and Hevi-Shot loads