Stainless Steel Flexible Exhaust Flex Pipe Specs: Internal diameter: 51mm ~ 2" External diameter: 55mm ~ 2.15" Thickness: 2mm Length: 1.02m~ 40" Finish: Stainless steel Features: It can be used to connect automotive exhaust pipes that are not lined up together. Allows easy installation. It is mainly used to reduce and prevent excessive stress on the current exhaust system; does so by absorbing vibration and thermal expansion. Notes: Make sure it is installed in a half-extended state. To ensure it's at a half-extended state, place the middle of the tubing down over the edge of a workbench, push down on both halves, and bend as much as possible. Once complete, place the entire piece on the table and push down until it's straightened across the length of the table. Returns If you are, for any reason unsatisfied with our products, please return them within 30 days for a full refund. Item must be in original packaging. Contact Feel free to contact us with any questions or concerns.