1The universal zipper head is made of high quality metal iron + plastic materials, which is durable and wear resistant, and long service life. 2Any broken zipper can be repaired quickly and easily, no sewing is required, and it is suitable for all kinds of places where a zipper is needed. 3Suitable for bags, clothing, coats, outdoor tents, jackets, wallets, jeans, backpacks, suitcases and some DIY projects. 4Mainly used on most common zipper mishaps including split zipper tracks, broken sliders and up to 3 missing teeth. 5Easy to install and disassemble, can be used for a long time, with little wear and tear, and can directly replace old or damaged zipper heads.