The Carlson's Short Invector 1.5" Flush Sporting Clays Improved Modified Choke Tube .410 Stevens 301, featuring a Bright Stainless finish, is precision machined from 17-4 stainless to deliver patterns that outperform standard choke tubes. It offers a 25% longer parallel section, yielding more consistent, dense patterns, while a knurled end allows quick removal or installation and the constriction is laser-marked on the end for easy reference. This choke is compatible with lead shot, steel shot, copper-plated shot, nickel shot, Hevi-Shotshells, and buckshot in Sporting Clays applications, with a caution that steel shot larger than BB should not be used in any choke tighter than Full. Specifically designed for 410 shotguns, these Sporting Clays Choke Tubes provide tighter, denser patterns than Flush Mount choke tubes due to the extended parallel section, making them a reliable choice for precision patterning in field and range settings while maintaining straightforward installation and reference during use.