These standard-duty Hedman Black Maxx Ceramic-Metallic Coated Headers come from the factory with an extremely durable, protective black ceramic-metallic coating, and can withstand temperatures up to 1400 degree F. Each set uses mild steel, smooth flowing, CNC mandrel bent tubes, that are hand-welded to ensure each pair is identical to the next. Hedman's unique, gasketless ball and socket collector design allows your vehicle's exhaust system to bolt up, even if it is not perfectly aligned with the header collectors. Each set includes a pair of gaskets, header flange bolts and collector bolts. No collector gasket is needed.