MaterialThis zipper rescue kit are made of metal. Easy to open and close.(Please see the size clearly before placing an order to avoid unnecessary return. Another product is coated with antirust oil in order to prevent rust. It may be dark after receiving the goods. Don't take if you mind) Packaging Contains 15 x sliver sliders (3 , 5 , 8 ), 15 x black sliders (3 , 5 , 8 ), 6 x double sliver sliders (3 , 5 ), 3 x double black sliders (5 ), 15 x bottom stoppers (3 , 5 , 8 ), 30 x top stoppers (3 , 5 , 8 ), 1 x zipper install plier, the length is about 4.5 inch. Different sizes and quantities meet your different needs.(Because it is measured manually, there will be an error of 2-3mm. Refer to the actual product ) Easy to Use 1: You can use the pliers tool to remove top zipper stop. 2:Remove the old slider. 3:Put the new slider on. 4:Then use the pliers tool to press zipper stop back into place. (Please refer to figure 4 for the use method ) Widely ApplicationThese Zipper Repair kit can be used for various sewing projects like repairing of clothing, fixing coat, bags, outdoor tents, coats, jeans, jackets, purses, luggage, backpacks. Do not need to throw out the garment and bags, save money. Helpful Zipper Replacement Kit You can use this zipper repair set to replace broken zippers. It is also good for other DIY projects. Note: Please confirm your zipper size and type before purchase. Small parts, please keep them away from children.