The grooving tool

Is a portable tool developed for cutting serrations in the tube holes of both ferrous and nonferrous tube sheets.

It can be used as a hand tool or mounted in a radial drill for a more permanent and positive installation.
Works well in C N C controlled machines.

The tool is adjustable from 22 to 54 mm (7/8" to 2 1/8") from the face of the sheet to the back side of the inner groove.