Kraken Automotive Vband Kits consist of high-quality components required to create a leak-proof, gasketless exhaust system with minimal hardware. These kits can be used for manifolds, downpipes, or any other section of your exhaust system. The flanges are made of A105 Mild Steel, the clamps are made of 304 Stainless Steel, the stud and bolt are made of galvanized steel for increased durability over time. We also designed these with an all metal locking nut, far superior to the nylon lock nut when dealing with heat. The male/female flanges are machined for a precise fit to ensure an easily installed, leak free, free-flowing exhaust. The inner portion of the flange where the exhaust pipe slides into is also machined for perfect pipe fitment requiring minimal prep work prior to welding. We hope you enjoy your new favorite exhaust mod!