Start of lstUrls_of_images_in_html_description Product Number: 11322 Invector Plus design extended for longer tapers, better patterns and greater ease of use. Extend your shooting abilities. These tubes are longer for a number of reasons. First, better patterning. Second, you can insert or remove them quickly with your fingers if necessary. Invector-Plus extended tubes are constructed of highly polished, 17-4 stainless steel for the ultimate in performance and durability. They are available in constrictions ranging from Skeet to Full. Features Knurled portion extends beyond the end of the barrel for easy removal and installation Longer choke taper inside Invector-Plus choke tubes for use with back-bored barrels Produces excellent patterns with uniform densities Set to industry constriction standards Threaded for 12 gauge Invector-Plus back-bored barrels only Constrictions Improved Cylinder – #1132283 Improved Modified – #1132263 Modified – #1132273 Skeet – #1132293 Full – #1132253 End of lstUrls_of_images_in_html_description