BBU – STRAIGHT BULKHEAD UNION
Available Designations:
BBU-04, BBU-06, BBU-08, BBU-10, BBU12, BU-15, BBU-16, BBU-18, BBU-20, BBU-22, BBU-25, BBU-28, BBU-30, BBU-32, BBU-35, BBU-38, BBU-40, BBU-42, BBU-50, BBU-81, BBU-82, BBU-83, BBU-84, BBU-85, BBU-86, BBU-87, BBU-88