design: coil zipper with plastic teeth, convenient for sewing. You can choose the appropriate zipper according to the color of the clothes. Meet your various DIY needs. Widely used: zippers can be used for clothing design, production or fixing, sewing technology, bag accessories, accessories or other handmade products. Uniform size and color zipper suit: 30 cm long, easy to sew. 20 different colors (each color x 5 zippers), all of which are bright and have no repetition, which can meet your needs. material: the coil zipper is made of nylon material, with thick zipper cloth and high-quality metal zipper head, which is easy to close and open. committed to providing quality products and service.