A Square Flange serves as a connection interface between the aftercooler and the separate circuit water lines. The square flange is designed to provide a secure and leak-free connection between the aftercooler and the separate circuit water lines. It is made of steel. Attributes:• Provides excellent strength• Manufactured to precise specifications and is durable and reliableApplications:A Square Flange is a square-shaped plate with bolt holes that align with corresponding bolt holes on the aftercooler and the water lines.