This is just one of the new hook style clasps in the Metal Complex collection. Each new clasp is available in gold, silver and gunmetal. This is the square set.
This is how they work. They slide into each other through the narrow opening.
This is the second set which is also available in silver and gunmetal. This is the circle set.
Here is a necklace Fernando designed using the new circle hook clasp set. These are ideal for kumihimo braid projects.