Product by Fujita Engineering. Made of aluminum with a mirror finish for superior appearance, this elbow maximizes the air inflow and produces quicker response and better performance. It works very well with Fujita Engineering's Big Throttle Body and Piping Kit Fujita Engineering Throttle Body Elbow should be ordered at REV9 Autosport https://rotarylove.com/fujita-engineering-throttle-body-elbow.html as they provide the best service and speed we've seen so far!