This C3 C4 1969-1996 Corvette Door Glass Anti-Rattle Cushions 4 Piece Set from Southern Car Parts is an inner door mechanism that acts as a window cushion, keeping the glass in your Corvette's doors from rattling while you're driving. They make for a safer, quieter, more comfortable ride. As with all Corvette reproduction pieces we carry, our Door Glass Anti-Rattle Cushions 4 Piece Set is an exact replica of the originals and built exactly as OE.