The YKK Vislon #10 Zipper 18 inch in black features molded plastic teeth made from durable polyacetal resin, making it lightweight yet strong compared to metal zippers. Its number 10 size and wide tooth design provide heavy-duty performance ideal for outdoor applications like marine, tenting, upholstery, bags, and jackets. This separating open-end zipper includes injection molded elements that resist chemicals, corrosion, and abrasion, ensuring long-lasting use in tough environments. Available with double pull or matching sliders, it offers flexibility for two-way opening and easy repair or slider replacement, making it a reliable choice for enhancing outdoor gear and patio decor.