Above is a pic of several Grove connectors. As I have decided to create my own expansion board using veroboard I will need to bend the outer two pins in order to solder the Grove connectors to the board as the pin pitch of the connectors is not standard.
In the picture below you can see the extra nine connectors mounted on the veroboard.
The above picture shows the board with the jumper wires and Arduino connections.
Below is a close-up of through pins attached to a piece of veroboard used to connect to the Arduino.