This choke tube is the ideal accessory for your firearm. Material: ASIS4140 STELL 33-35Hrc Size of a choke is IC (0.715) 90mm long Compatible for Beretta and Benelli. The choke tube feature extended forcing cones for consistent, realible patterns. Our choke tubes are precisly engineered and crafted from high-quality materials to ensure long-lasting durabillity. Chokes are designed for enhanced range and performance. This choke tube is 12 gauge, 90mm long, size. IC (0.715) Color Bands for sizes. Grey-CYL Blue-IC Red-MOD Yellow-IM Green-FULL 1 choke tube-size Improved Cylinder- Blue Band-12 gauge- for Berreta and Benelli