<https://india.dfi.org/2021/02/09/offshore-lead/>
<http://schema.org/description>
"A pile hammer lead which has an upper section wherein the hammer is contained and a lower section which closely fits about and guides the pile. The hammer is supported by a template. Also called Cage, Can Lead, Chuck Lead, Rope Suspended Lead, Pipe Lead."
<https://india.dfi.org/2021/02/09/offshore-lead/>