"Ridgeline Quilt Hooks clip directly to your quilt’s shock cord and change the direction of your quilt suspension. Rather than pulling out to the ends of the hammock it makes it so your suspension is pulling up snugging the quilt tightly against your hammock. They are sold individually but 2 are recommended per quilt. They are sold in pairs one white and black. Get one of each color so you can easily tell which end is your head and foot. Designed and produced in the USA by Tato Gear."
The above wording is straight from Dutch, and his team.