Zipper YKK 7" # 2.5 Nylon Coil Zippers ~ Closed Bottom ~ 520 Deep Red (12 Zippers / Pack) 7" Zipper YKK #2.5 Nylon Coil Zippers ~ Closed Bottom 520 Deep Red (12 Zippers / Pack) Strong yet lightweight zipper for slacks, skirts and dresses.