Carlson's Choke Tubes Delta Waterfowl Extended Choke Tube Beretta/Benelli Mobil 12 Gauge 2 Pk. These choke tubes feature a more "weapon like" action thus allowing tighter/denser patterns also works on shotguns with a longer barrel. These choke tubes come with a matte black finish and are manufactured with 17-4 heat treated material. These chokes are backed by Carlson's Lifetime Warranty. These chokes choke fit all models with a barrel that has a 12 gauge full length recoil lug. No outside lug is needed with these chokes as the recoil lug travels through the choke tube. Lead shot Copperplated shot Hevi-Shot tungsten carbide and even plated tungsten are all suitable. These chokes deliver less recoil and blasting cone than tungsten thus reducing recoil and muzzle blasting potential. Long Range choke tubes also tend to throw larger and denser patterns than standard choke tubes. Easy to change without changing your choke. Long Range choke tubes also tend to produce less flyers and fewer decoys. Specifications for Carlson's Choke Tubes Delta Waterfowl Extended Choke Tube: Manufacturer: Carlson's Choke Tubes Color: Black Fabric/Material: 17-4 Stainless Steel Gauge: 12 Choke Type: Mid Range/Long Range Diameter: 0.695 in 0.705 in Gun Make: Benelli Quantity: 2 Additional Features: Non-Ported Included Accessories: Choke Wrench Features Delta Waterfowl 12ga 2 Pk (MR & LR): Beretta/Benelli Mobil Package Contents: Carlson's Choke Tubes Delta Waterfowl Extended Choke Tube wrench Carlson's Choke Tubes 07110: Delta Waterfowl Extended Choke Tube Beretta/Benelli Mobil 12 Gauge 2 Pk