<https://www.drillbitwarehouse.com/product/cobalt-double-ended-drill-bits/>
<http://schema.org/description>
"Premium Cobalt Double end drill bits - all sizes. Great for pilot holes. Fantastic when drilling up to a 1/2\" hole in Hard Steel."
<https://www.drillbitwarehouse.com/product/cobalt-double-ended-drill-bits/>