Image Item No. Description  1938  Technic Ball Joint Swashplate with 4 Grooves and Square Hole Catalog: Parts: Technic  1937  Technic Turntable / Swashplate 5 x 5 Base with 4 Pin Holes Catalog: Parts: Technic  1936  Technic Turntable / Swashplate 5 x 5 Top with 5 Pin Holes Catalog: Parts: Technic