Carlson's Sporting Clays Choke Tubes. Made from 17-4 stainless and precision machined to produce a choke tube that patterns better than standard choke tubes. Feature a 25% longer parallel section in the choke thus throwing more consistent patterns. Each choke tube is knurled on the end to allow for quick and easy removal. Lead, Copperplated, Nickel, Hevi-Shot, Bismuth, Tungsten or Steel Shot may be used in these choke tubes. These choke tubes are also backed by Carlson's Lifetime Warranty.
Winchester 12 Gauge Sporting Clays Choke Tube, Constriction-Modified, Diameter is .710 Carlson's item #19774