Name/Part number of black plastic pieces at bottom of Z06 front bumper?

I have a 2007 Corvette Z06 and due to my clumsiness I've damaged the black plastic pieces on the bottom of the front bumper. I've been told they are easy to replace but I can't find them to order them. Does anyone know of a part number or name for these black plastic pieces. They are the bottom-most thing on the front bumper of the C6 Z06 and are easily damaged by hitting curbs, steep driveways, etc. Thanks!