This item may be regulated for export by the U.S. Department of State or the U.S. Department of Commerce. Please see our Export Policy prior to placing your order. Utilizing todays most modern machining technology, the strongest exotic materials available, and over 40 years of research and development focusing on shotgun chokes and perfect pattern development, Jess Briley Manufacturing is proud to present the Briley Helical Hunter series of chokes. The Briley Helical Hunting series of chokes are the most technologically advanced non-toxic hunting chokes available today. The Briley Helical Hunter Choke represents the culmination of countless years of research stemming from both the clay target ranges as well as the waterfowl marshes to bring the market the ultimate hunting choke. The Briley Helical Hunter series of chokes uses the same Helix porting technology from our infinitely successful line of Helix clay target chokes to help produce a perfect pattern with any type of non-toxic shot. In addition to the Helix porting our engineers have incorporated a very specific array of internal geometry which has been designed to give the absolute best performance with any type of non-toxic shot. In addition to the performance from the Briley Helical Hunter we wanted to make it simple to use as well. There are only three sizes of chokes: 1, 2, and 3. The chokes are labeled accordingly on the head of the choke with a series of dots. The dots are highly visible for ease of Identification and machined right into the head of the choke to eliminate the possibility of the markings being easily rubbed off or worn down over time. The number 1 is the close-range choke meant for teal and timber hunting or large ducks over decoys for those close-range shots out to about 25 yards or less. The number 2 choke is the mid-range choke used for larger ducks in more open areas and mid-range passing shots from 25-45 yards. The number 3 choke is specially designed for those long-range shots on open water from 45 yards, as well as long shots on geese or cranes.Briley Invector Plus Helix Hunter 12 Gauge Choke Tube, Browning, Long Range, Bla