CUTTING TOOLS FROM DENMARK

Mokena IL

Description

I recently came across these bits at an estate sale.I am wondering if anybody can tell me their use? I get it that it is some kind of boring tool, but I would like to find out more. A number of the tools are stamped as follows: OLDI or OLUI. REG 1954 DENMARK I received three explanations recently. But my computer blew them out when it crashed. Please resend! Anything will be appreciated. Ray