All tubing products are made from 16 & 18 gauge aluminized steel. Aluminized Steel is a mild steel treated with an aluminum coating to prevent rust to ensure that the product will look good and last longer under the car. When purchasing exhaust accessories, please ensure to take the proper measurements. The Inside Diameter (ID) measurement accepts the same size Outside Diameter (OD) Pipe/Tubing, while the Outside Diameter (OD) measurement fits into the same size Inside Diameter (ID) Muffler/Tubing.
