Boat lift cable split lead weight. Keeps your cables tight when your bunks float or get loose when they are in a lower position so it doesn't mess up the upper spindles and how the cables sit on them as you wind them back up.
Total of 8 are available. $65 each or $450 for all of them.
These are brand new are were bought as extras for our boat lifts. After repairs we made from a storm, we ended up not needing this.
Stainless steel hardware is included to attach to your cables.
Here is a link for more information from a retail store:
https://bh-usa.com/10-lb-split-lead-cable-weight/