This choke tube is the ideal accessory for your firearm. Compatible for Beretta and Benelli! Material:ASIS4140 STEEL 33-35 Hrc BLACK ones are chrome coated- for visual aesthetics only-doesnt change purpose. Size of a choke is IM (improved modified 0.695) 90mm long 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 IM (improved modified 0.695) Yellow/gold band 1 choke for sale.