swivel ball link [R67]: A component of the gooseneck assembly that mounts to the forward end of the main boom.
The swivel ball links come in various sizes. Those most used in applications on model yachts are the 2-56 and the 4-40 sizes. Obviously, the smaller size for smaller model yachts and the larger for larger model yachts

Sources
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- 2-56 Swivel Ball Link
- 4-40 Swivel Ball Link
- There are other sizes available
Related Articles
- “Assembling a Jib and Main Boom.” usvmyg.org. June 2026.
- The step-by-step process for shaping and installing fittings on your main and jib booms to prepare for final assembly of the rig.
- “Gooseneck“
- TMY Editorial Staff. “Gooseneck Attachment Bracket.” The Model Yacht. 24:2. Summer 2023.
- This gooseneck attachment bracket accommodates a ball link and a Walton Boom Vang.



