<https://www.omnitrack.com/us/product/lp30a-stainless-steel-balls/#webpage>
<http://schema.org/description>
"Omnitrack LP30A all-plastic ball transfer units with stainless steel balls. Convey load max 15kg. 30mm diameter main ball within pressed 45mm POM housing."
<https://www.omnitrack.com/us/product/lp30a-stainless-steel-balls/>