The Sjobergs steel holdfast with bench insert gives clamping around 360 degrees and up to 5 inches in height. Uses both the 3/4" Dog holes and the benchtop and in the trestle, the holdfast allows more versatility for your bench projects
Bench insert is included
Holdfast can fasten anything you wish to your workbench.
The insert should be mounted underneath the top in this hole.