Start of lstUrls_of_images_in_html_description Product Number: 1130 Superior from sporting to the marsh. Invector-Plus tubes are available in constrictions ranging from Cylinder to Extra-Full. The longer choke taper inside Invector-Plus choke tubes is made for use with back-bored barrels to produce excellent patterns with excellent uniform densities under all conditions. All Browning tubes are set to industry constriction standards Flush fit does not extend beyond end of barrel Constructed of highly polished, 17-4 stainless steel for the ultimate in performance and durability Specifications Improved Cylinder – #1130805: Choke Pattern 25%-55%, Choke Notches IV Skeet – #1130795: Choke Pattern 20-45%, Choke Notches V Full – #1130755: Choke Pattern 55%-85%, Choke Notches I End of lstUrls_of_images_in_html_description