See the KREG In-Line Clamp in action in the video below:
The KREG In-Line Clamps hold work pieces securely without the clamp getting in the way.
The clamps fits any 19mm bench dog hole and can be used to apply holding pressure horizontally by means of the turning mechanism. Used together with bench dogs, the clamp is ideal for when a hold down or F-clamp would get in the way, e.g. when planning or sanding s surface.
The low profile of the clamping shoe (13 mm) means it always sits below surface of most materials. Its shape is allows holding of multiple shapes including corners