Zipperstop Wholesale YKK&reg; 7" Rhinestone Zippers Closed Bottom ~ Czech Rhinestone Zipper ~ Dual-strand ~ Black (1 Zipper / Pack) Zipperstop Wholesale YKK 7" Rhinestone Zippers Closed Bottom Czech Rhinestone Zipper ~ Dual-strand Black (1 Zipper / Pack) Made of crystal which has individiually cut and polish facets.