<https://dev.sherline.com/product/7600-insert-holder-tool-post-38/#product>
<http://schema.org/description>
"Your present Sherline tool post may be modified to accept these special tool holders, but an easier solution is Sherline’s special tool post. It is designed to fit the larger 3/8\" square and 3/8\" round tool holders commonly used for carbide, ceramic or diamond inserted tips. It will also hold Sherline’s own right- and left-hand 55° inserted tip tool holders. The purchase of this tool post will allow you to keep your standard tool post available for use with 1/4\" high-speed steel tools for jobs where they are sufficient and/or a specially ground and shaped tip is required."
<https://dev.sherline.com/product/7600-insert-holder-tool-post-38/>