Product description
Material: alloy + plastic + nylon
Open zipper (such as jacket):
1. Loosen the screw on the slider
2. Put the zipper on the closed side into the slider
3. Tighten the screw and the zipper can be used as usual
Closed zipper (such as backpack):
1. Loosen the screw on the slider
2. Put the zippers on both sides into the slider, as close to the starting end as possible
3. Tighten the screw, pull back and forth several times until the opening and closing are smooth and you can use it as usual