Connects a pair of quick clamps (Silverline) together, extending them to allow you to work on larger pieces.

The nut is held in place and allow it to tighten up directly onto the bar to pull it tight.

You might want to check the sizes of your bar as the connector is a little loose but does work as is (as you can see from the picture).

The bars come with nipples on the end - this may need to be removed to allow the bar to go into the connector (not having it doesn't cause problems with the original jaws as they only stop it moving down the bar).