<http://schema.org/mpn>
"409636 RC FLAT 7D BEND OVERSIZE 620mm"^^<http://www.w3.org/2001/XMLSchema#string>
<https://www.outdoorweb.cz/cyklistika/cyklo-prislusenstvi/riditka/409636-RC-FLAT-7D-BEND-OVERSIZE-620mm-riditka>