Made of a highly textured Aluminum composite surface on one side, with high temperature silica felt center and a durable Mylar composite facing. This aero-space Quality heat shield is a composite construction mat that uses existing bolts for instillation. Installs in minutes by removing four bolts from each side, (that you have easy access to) of the plate above the exhaust. Slide in place above the exhaust and reinstall the bolts.