material: our zipper slider pull tab is made of Metal, solid and to use for a long time, not easy to break or deform, black to match with your objects Suitable occasions: these metal zipper heads are suitable for many occasions, they can be applied for suitcases, jackets, bags, sportswear, down coats, backpack, boots and more; You can also share them with your friends or family members Convenient and functional: a zipper replacement pull that you can install without tools or sewing skills, easy to repair your clothes, bring you much convenience even when you are travelling, fast and effective solution for zipper falling Proper size:we use size 5, which is suitable for most sizes, because most of the clothes and bags are in size 5, you can use them at ease Practical usage: With these universal zipper fixers, you can repair your broken clothes or bags easily, they are easy to install, much time and energy in some emergency occasions.