Tetra ProSmith Universal Shotgun Rod, 34-Inch Heat-treated stainless steel for maximum strength Exclusive spinning delrin handle Screw-on delrin bushing and brass collar center rod in barrel to prevent scraping Fits standard accessories: shotgun: 5/16-27 thread Dupont tufcoat coated for maximum barrel Protection Stainless Steel contraction Dupont "Topcoat" protects your barrel 1 Piece rod is stronger and offers more flexibility