Speed shop liquidation items.  The hold downs are being sold as a set of 4 needed for installation of a fuel rail assembly.  The shop purchased these items in bulk, therefore there is no original packaging available.  We have separated and inspected each item and bagged them separately for shipping purposes.  This speed shop mostly dealt in Chevrolet retrofit items.  There are no screws nor center slides available.  You are purchasing the base assembly only.  Each unit measures approximately 2" x 1 1/2" and is comprised of aluminum molded construction.  Please inquire with any questions.  Thank you.