... 3.softness is good 4.ensure to soiling 5.higher cup Empty cup chain is widely used in high-grade metal jewelry, crafts, ... industries. Generally can be used to clip rhinestones, pearls, rough stone, acrylic, resin rhinestones.our product advantages:1.error rate for ... is higher cup,which can protect the stone not easy to be out5.good quality cup and chain, increase the strength for cup chain.6.we ...