Factory Browning Standard Invector .410 Bore Full Choke Tube Produces excellent patterns with excellent uniform densities. All Browning tubes are set to industry constriction standards. Constructed of highly polished, 17-4 stainless steel for the ultimate in performance and durability Specs: Material: 17-4 Stainless Steel Pockets: Stainless Choke Gauge: .410 Choke Pattern Percentage: 55% - 85% Choke Notches: 1 Weight: 4.8 Ounces This is a manufacturer's picture, so the item may not be exactly as it appears in the picture.
