These are 6-32 female/female custom aluminum standoffs measuring 4 inches in overall length and tapped 3/8" deep on each end.  Outside diameter is 1/4".  Production was done overseas for optimal cost and lead time for the first release is typically at 120-140 days.  This part we supply on a revolving annual blanket release arrangement that allows our customer to spread out the cost over the year as they use the parts.