Sporting Clays Choke Tubea < Features Our NEW Sporting Clays with a BLACK FINISH are made from 17-4 stainless and precision machined to produce a choke tube that patterns better than standard choke tubes. These choke tubes feature a 25% longer parallel section in the choke thus throwing more consistent patterns than conventional choke tubes. Each choke tube is knurled on the end to allow for quick and easy removal or installation. Each choke has the constriction lasered on the end for easy reference. Sporting Clays Choke Tubea < Specifications Crafted for sporting clays Steel 25% longer parallel section Used with lead copperplated nickle hevi-shot or steel shot Cannot be used with steel shot larger than BBs and faster than 1 550 feet per second