The Gold Band tube. Choose from a full selection of 28 gauge choke constrictions. Extended for more optimal choke tapers this workhorse excels for both sporting and hunting. For Standard Invector 28 gauge shotguns ONLY. – Material: 17-4 Stainless Steel – Color: Black – Finish: Black Oxide – Choke Gauge: 28 – Choke Pattern Percentage: 45%-75% – Length: 3.125 – Weight: .9 oz