Carlson's Long Beard XR 12 GA Choke Tubes Fits Winchester shotguns (.660 constriction) Manufactured from 17-4 stainless steel Features shot-look Technology that allows for the tightest patterns and longer downrange reach over any turkey load on the market Has a 25% longer Parallel Section, thus throwing tighter and denser patterns downrange Triple shot Technology reduces Pellet deformation, shortened shot string and has less Flyers