Reproduction back glass seal for 1957-60 Ford F-100 F-250 and F-350 pickup trucks without wrap around rear windows.This is a standard black gasket and does not have the groove required for installing stainless trim. It is made from ozone resistant EPDM rubber using factory specs for an OE quality fit and finish.Note:This gasket goes first on the glass and is installed using the rope-in method.