......my knowledge is scant on bar stems but I have recently come across an Il Primo alloy stem in rather nice condition that has a 10mm expander bolt head set in a deep recess, there is a choice of different coloured rubber bungs that came with it that fit over the bolt head giving a flush finish to the top of the stem...........I wonder if any list members can enlighten me as to the period this stem was manufactured and was there a particular model name for it? regards Griff King-Spooner (London UK)