Zipperstop Wholesale Ykk&reg; Vislon Zipper, YKK #5 Molded Plastic Separating 18" Zipperstop Wholesale YKK Vislon Zipper, YKK #5 Molded Plastic Separating Made from the finest quality plastic to ensure extra strength & reliability. Medium Weight YKK Zipper. Individually molded teeth colored to match tape. Slider and tape colors match