<https://www.greenvill.co.uk/products/titanium-bevelled-ring-core-blank-with-screw-4mm-2mm-groove>
<http://schema.org/sku>
"HO5-L.5-6"
<https://www.greenvill.co.uk/products/titanium-bevelled-ring-core-blank-with-screw-4mm-2mm-groove>