1. The additional automatic closing slider (nylon spiral toothed slider, metal zipper pullers, plastic zipper puller) features an automatic locking mechanism for smooth operation without slipping. Ideal for outdoor clothing and jackets. quality materials: crafted from strength metal with an galvanizing process, ensuring longlasting durability. 2. Features: Wide range of applications—universal replacement sliders in various sizes and shapes, for repairing zippers on luggage, outdoor gear, purses, suitcases, and backpacks. 3. Zipper installation pliers: Approximately 10.2 cm in length, ideal for installing zipper sliders. Compatible with sliders of different sizes, featuring nylon handles with nonslip textured grips for durability and fade resistance. Easy to use, allowing you to effortlessly most standard zippers and extend zipper length. Nonslip and comfortable to hold. DIY zipper made simple.