i picked up this stem the other day, and it's got a feature i've never seen before; there's a steel plate that the bar-clamp bolt threads into, rather than threading into the other side of the clamp as on all other stems i've seen.
anyone know anything about this setup? the stem is perfectly normal in all other repects, including the njs stamp.
(at first i thought it might have been a really clever fix for stripped clamp, but the 'pat. pend.' stamp makes me think otherwise).