Carlsons choke tube cremator 12ga ported c-range ber mobil FEATURES-Beretta Benelli Mobil-12 gauge-Close range-Diameter: .720-Triple Shot Technology-25% longer parallel section for tighter and denser patterns-Ported-17-4 stainless steel, matte black finish Other Features: Triple shot technology of 3 graduated rings in parallel section of the choke that allow a gradual transition to final restriction reduces pellet deformation, shortens shot string,& fewer flyers.Fits beretta and benelli mobil