2-Bolt Exhaust Flange Connection Kit includes 2 Pcs 2.75 Inch Flange, 1 Pcs 2.75 Inch Gasket, 2 Pcs of Flange Hex Head Bolts, 2 Pcs of Flange Hex Nuts, and 2 Pcs Hex Nuts gaskets. Made from heavy gauge metal with chrome plating, this 2-Bolt Exhaust Flange is durable and sturdy. It offers excellent performance in oxidation resistance, rust prevention, anti-corrosion, and resistance to extreme temperatures, ensuring a long service life. The bolt-to-bolt distance is 3.29-5.20 inches (83.6~132mm), and the oval hole design provides convenience for locking two exhaust flanges, making it ideal for connecting two exhaust pipes. The hole Package Dimensions is 2.75 inches, suitable for vehicles with 2.75" OD exhaust pipes, perfect for custom exhaust projects or repairs. Installation is straightforward. These 2.75 inch flanges can be easily connected using hex bolts and nuts, with the gasket placed between the sealing surfaces of the two flanges and the nut tightened to secure the pipe fitting connection firmly and sealed. Package Dimensions: 5.71 x 4.45 x 1.26 inches.