#5 YKK Bottom Stops. Made from solid brass. For use with size 5 YKK zippers. Sold in packs of 50. Bottom stops are crimped into place to limit the movement of the sliders. Use of running length tape and the top and bottom stops will allow custom length zippers to be worked into any project requiring a zipper. The tabs on the bottom stops are chiseled to a point to allow easier insertion into the zipper tape without tearing the material.