These colorful nylon zippers will compliment all your sewing and craft projects.20 pieces per pack of Assortment Colored Zippers (20 colors x 1 zippers)Each zipper is 12 inches in length from zip to zip, with overall length approx. 13 incheshe zippers are made of high quality nylon on cotton/rayon cloth.ASTM: D2061-07 Certified by Intertek Product Description These zippers come in 20 unique and assorted colors that will compliment all your sewing and craft projects. A perfect fit for any sewing projects including, but not limited to, skirts, dresses, pouches, makeup or stationary bags, pillow cases, and more! Each zipper has an end stopper and two front locks that make using them on your projects hassle free. No more worries of non-uniform sewing or the zip slipping off. These zippers are accurate in size. Each zipper is 12 inch in length from zip to zip, with an additional 1 inch total on the sides. Brand KGS KGS KGS KGS Size 12 inch 12 inch 5+7+9+12+15 inch 9+12+15 inch Pcs/Pack 20 pieces per pack 100 pieces per pack 100 pieces per pack 100 pieces per pack Color 20 Unique Colors 20 Unique Colors 20 Unique Colors 20 Unique Colors