TFL 3-piece transom mount connectors: 4mmThese are a clean way to make transom connectors for outboards and other items that may need a connection from the outside of the hull to the inside. Includes: Blue, green, and red set. Specs: 4mm Bullet on the outside. Flat spade connectors inside. Note: Picture 3 shows these installed in a TFL Warrior Outboard boat.