.[ZOLI] 12 gauge Stainless Steel/Ceramic Competition/Hunting Choke Tube used for ZOLI

Constriction Guide: U0: Cylinder/SkeetU1: Skeet/Improved Cylinder U2: Light Modified/Modified U3: Modified/Improved Modified U4: Full/Extra Full  U0 is good out to 28 yards. U1 is good out to 35 yards U2 is good out to 45 yards U3 is good out to 60 yards U4 is good beyond 60 yards No Limits! Compatible with ALL Target & Hunting ammunition, including Turkey Loads, Buckshot, Slugs, Steel Shot, Hevi Shot, Tungsten, TSS, Kent, Fasteel, Bismuth, ITX, Winchester Blindside, Federal Black Cloud, Remington Nitro Steel, for Deer, Dove & Quail, Pheasant, Turkey, Duck Hunting, Ducks, Goose Hunting, Geese, Snow Goose, Sea Ducks,  (Slugs not to be used with U4)   Muller Chokes is not responsible for incorrect choke selection.  If you are unsure what choke your barrel takes, please check with a reputable gunsmith.