ITEM NAME:Anti-corrosion Universal 3" OD to 4" OD Exhaust Pipe Adapter Connector Reducer Description: 100% brand new and high quality. Made of stainless steel, rustproof and anti-corrosion. 3" To 4" Inch Turbo Exhaust Reducer Adapter Pipe. Universal fit for car and trucks modification. 3" O.D. to 4" O.D. Package Includes: 1 Piece Exhaust Piping Reducer Note: Professional installation is strongly recommended. SKU: DMO0000873652035056.1 Piece Exhaust Piping Reducer. Universal fit for car and trucks modification. 3" O.D. to 4" O.D. SKU: DMO0000873652035056.