#3, #5, #8, #10 U-Shape Top Stops use for Clothing, Crafts, Purses, Handbags and so on.
Shortened Zipper by Putting the "U" Shaped Zipper Top Stops to Make the Slider Stop at the End. It Will Keep the Slider from Falling off the Teeth on the Zipper, Good on Plastic and Metal Zippers.