Osculati Double Joint Swivel Anchor Connector

Pure Bling. Primarily designed to be a shiny ooh aah adornment for bows overhanging marina walkways.
Bah humbug. The last thing that you want is a fork end directly attached to an anchor shank. That's what bow shackles are for.
 
It is possible for the articulation in a swivel to jam. If it does, the leverage is pretty strong, and can bend the swivel. A bow shackle (or even a ring) will accommodate dramatic changes in direction of pull, and transmit the tension dreckly to the top of the shank.
 
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