This black #3 YKK nylon continuous zipper is priced by the yard. We cut the zipper to the number of yards you need. You would then cut the zipper to the length required for each of your leather projects.
This YKK zipper is a #3 nylon coil zipper 7/16". That means the nylon coil when zipped shut is approximately 3 mm wide. The tape (cloth) on the zipper when opened in 7/16 inch on each side.
This type of zipper is used in bags and cases since both ends of the zipper must be sewn shut in the material. It cannot be used in jackets since the ends are not finished for opening apart as required in a jacket.
For this YKK #3 nylon coil zipper, the pulls that are the correct match is the black YKK #3 Auto-lock Slider.
The YKK Group has been producing reliable zippers since 1934. YKK zippers are considered to be the best zippers due to being incredibly dependable. Roughly half of the zippers in the world are made by YKK since garment and leather goods producers prefer their solid strong zippers and pulls.