The “Lug connector” is used to join cubes together around the perimeter of the dock or inside the perimeter of your “Drive on” structure. As it is the external connecting pin, it is more convenient to use a lug connector than the conventional pin that we use within the structure. It is robust and requires a Hex tool to properly create a strong fix of the corner tabs of dock. In some cases a “spacer” might be needed. Same as all our products, our lug connectors are made of an injection process which assures the same strength and safety.