3.5" Preformed Band Clamp Exhaust Muffler S.S. TORCTITE 3.5" Stainless Steel Preformed TorcTite Band Clamp For Lap Joints Simple, Effective Way To Connect Exhaust System Components Pre-Attached Hardware for Fast, Easy and Accurate Installation Exclusive Reaction Block Creates a Complete "Innercircle Seal" When Clamp is Secured Rust and Corrosion Resistant High-Strength Plated Grade 8 Fasteners Preformed for Accurate Installation Cases No Damaging Distortion to Pipe or Flex Hose Can Be Torqued From Either Side/ul