The OTR 4" Size 12-Gauge Aluminized Steel Exhaust Connector is the perfect solution for your exhaust system needs. It is de-burred and finished with end cuts for safe handling and has notched ends for easy installation where applicable. The aluminized steel construction provides added corrosion resistance and superior quality. This exhaust connector will provide a secure and reliable connection for your exhaust system. FleetPride is your First Click in Heavy Duty®.