Carlson Delta Waterfowl 20ga LR Winchester Hunting TST is a series of

TST is a series of three graduated rings in the taper section of the choke tube

operation manual and neoprene cover

Fluoro premier has 42 percent more knot strength than leading fluorocarbon competitors

Tourniquet inside secured with elastic loop

Carlson Delta Waterfowl 20ga LR Winchester Hunting TST is a series ofCarlson's Delta Waterfowl 20ga Choke Tubes are manufactured from 17 4 stainless steel and are designed to throw tighter and denser patterns than conventional choke tubes. These choke tubes feature a 25 percent longer parallel section in the choke, thus throwing more consistent patterns. Each choke tube is knurled on the end to allow for quick and easy removal and has the constriction and type laser marked on the end and body for easy reference. steel