Connects from a 2.5 to a 2.75 inch diameter tube3 inches longConstructed from durable reinforced siliconeConnects different diameter sized tubing to fit custom applicationsAEM silicone hose adapters are designed to connect two different diameter air intake tubes for racers, builders and fabricators to create custom ducting for turbocharger systems and air intakes. AEM hose adapters are constructed from reinforced, multi-ply silicone that can withstand very high working temperatures.