RECOMMENDED BANJO ASSEMBLE WITH Double BANJO BOLT: With the suitable Double Banjo Bolt to Suit the desired Banjo Hole, place a copper washer either side of the first Banjo and place the second Banjo onto the bolt, also placing a washer at the remaining side to create a sealed fitment when tightened.  **Please note that the washers internal diameter must also match the Banjo Bolt size to ensure it is a sealed fitment to avoid leaks and loss of pressure.