<http://schema.org/description>
"A simple and more efficient locking system has been developed for TandemMould, a patented stack-mold system that opens and closes two mold faces in alternating sequence."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.ptonline.com/products/tandem-molds-get-simpler-better-locking>