I got my moustache bars from Cycles Gaansari along wth a nice Kalloy stem he sells just for these bars. Reach is only 45mm and the quill is a longish 250mm. The quill is steel (maybe cromo) and the stem part is alloy. Here is a pic:

By the way, On-One in the UK is offering thier own moustache bar. Gaansari stocks it. It's black in color but besides that I couln't tell any other difference.