Trulock Ported Choke Tubes. It is manufactured from high quality 17-4 stainless steel for years of durable performance and service. This choke has a matte blue finish and can be used on lead shot for BB's and lead shot for longer range shooting. Each choke tube has the constriction etched on the body for easy reference. These chokes are ported to ensure a convex shape and provide even longer choke tube life. Specifications for Trulock Ported Choke Tubes PHCRP12660P: Manufacturer: Trulock Finish: Black Fabric/Material: 17-4 Stainless Steel Gauge: 12 Choke Tube System: Benelli Crio Plus Gun Make: Benelli Additional Features: 50 yds The Trulock Ported Choke Tubes PHCRP12660P is a quality addition to the Trulock lineup. For more great deals on Shotgun Chokes by Trulock please browse our Trulock Choke Tubes page. Trulock Ported Choke Tubes PHCRP12660P