FEATURES-Works with high density Hevi-Shot® bismuth & tungsten loads in 12 & 20-gauge shotguns-Blued finish-3" long tube-Knurled end for easy hand installation-Fits 2-3/4" 3" & 3-1/2" guns-Beretta Mobil Benelli Franchi Traditions ALS 2100 Stoeger & Gazelle Series