This is for a new reinforcing cage for a fuel pump bellows for a Saab 900. This was used in 1979 to 1988 applications for the larger opening pumps. The rubber bladder opening size for this cage is for the pumps just under 2.25 inches. Rubber is in good shape with no cracking. This one has a later upgrade metal cage to help keep the rubber from stress cracking. Would need a metric thread bolt What you see is what you get. This was a fix Saab came up with before standardizing on the plastic housing pumps.