Premium T304 Stainless Steel Made from high-quality T304 stainless steel for excellent corrosion resistance and durability under high-heat exhaust conditions. Built to last in demanding environments. ?Double flared ends for Easy Installation Two expanded end allows convenient slip-fit connection with compatible 4.5"exhaust piping. Suitable for weld-on or clamp installation (professional installation recommended). Dual-Slotted End Design for Secure Fitment Both ends feature precision slotted cuts to allow easier clamping and improved adjustment during installation. The design helps provide a more flexible and stable connection when used with exhaust clamps or weld-on setups. General 4.5-inch outer diameter compatibility solution Designed for exhaust systems, exhaust pipe extensions, and other automotive or industrial applications. Please measure the dimensions before purchase. The 17.3-inch straight part is very suitable for cutting and welding. It is highly suitable for repairing the exhaust systems of cars, trucks, SUVs, off-road vehicles and motorcycles.