These pliers are composed with one jaw flat straight and other bent at 90 degree on the tips
They are used to hold and manipulate in the opening of double rings without the normal hassle incurred when trying to open these overlapping rings. Just put the bended jaws between the overlapping split ring and squeeze. The split ring pops open and is ready to be put on a chain.
They are very useful for attaching charms, clasps or other objects to your jewelry, or for holding links of bracelet chains during chain manufacturing and repairing.