<https://twinspringcoupling.com/martin-10sc-48-quadraflex-spacer-coupling-hub/#richSnippet>
<http://schema.org/description>
"Power transmission coupling products to replace universal joints, jaw couplings, elastomeric and other couplings. Replaces all power transmission couplings. No internal components to maintain and replace. Up to 45° flexibility, Up to 500 ft lbs of static torque and capable of up to 7000 RPM"
<https://twinspringcoupling.com/martin-10sc-48-quadraflex-spacer-coupling-hub/>