The YKK Vislon #10 Separating Zipper AutoLok Double Pull Plastic Slider in 36 inches is a heavy-duty black zipper featuring molded plastic teeth on polyester tape for reliable separating function. It includes double pull AutoLok sliders that automatically lock for secure closure and offer two-way operation. Engineered for durability, it resists corrosion, chemicals, UV exposure, and performs well in marine and outdoor environments such as tents, upholstery, and jackets. Its self-lubricating teeth provide smooth action while withstanding abrasion and harsh conditions, making it suitable for professional automotive, marine, and outdoor applications requiring robust and consistent performance.