ASDOMO Universal Instant Fix Zipper Repair Replacement Zip Slider Teeth Rescue 6 PCS Fixes any zipper in a flash! Works on most common zipper mishaps including split zipper tracks, broken sliders and up to 3 missing teeth! No tools required. Removable & Reusable. Can be started in the middle of a zipper, zips forward and backwards. No more stuck clothing, simply loosen screw to dislodge. Works on plastic, nylon or metal zippers. BPA free and free from any other harmful and toxic chemicals.