grommet kit- It comes with 200 sets (each set includes 1 grommet and 1 gasket), two installation tools, a punch and a storage box. This set will bring you convenience in use. Colored Eyelets - The sewing eyelet is made from high quality metal, very sturdy and durable. 3 colors of eyelets (gold, silver ,bronze) to distribute the variety leather garments. Approx. 6 mm (0.25 inch) inner diameter, 10 mm (0.39 inch) outer diameter, 3 mm (0.12 inch) barrel length. Practical Tools- They are made of stainless steel, exquisite and lightweight, not easily deformed. You first punch a hole on leather crafts, leather straps or garments with the punch tool, then push it in to push the grommets together. Wide Application- This kit saves you economy like repairing tools or decorations,perfect for canvas,leather,clothing,shoes and craft projects ect, you can also used it to repair tarps, tents, awnings and other items made of fabric. Easy to Organize- All the tarp eyelets and tools can be placed in the storage box with removable baffle, which helps you find your accessories quickly, and save space, easy to transport and store.