Grommet Kit: Includes 120 pieces grommet eyelet kit (with 120 grommets and a washer), a hole punch tool and a fixed tool, all in a damage-free plastic box. Copper Grommets: Made of quality cupronickel and electroplated on the surface, with very high corrosion resistance and bright appearance, not easy to rust. Easy to Install: The complete eyelet punch kit makes installation easier. First use the hole punch tool to punch a hole in the tarpaulin, then take the grommet kit, and then use the fixed tool to fix the grommet kit well. Wide Range of Uses: The grommet kit is suitable for canvas, tarpaulins, tents, curtains, backpacks, leather crafts, repairing and decorating. Size: The inner diameter of these copper grommets is approx. 1/2 inch, outer diameter is 5/6 inch, height is 1/5 inch, great accessories for various craft projects. Features: 120 pieces metal eyelets, one black punch, placed in a clear storage box. The buttonholes are made of high quality metal and can be used for a long time. Each set of eyelets and metal gaskets fit together well. Durable buttonholes are easy to use and are ideal for canvas, tarps, tents, awnings, belts, clothing, wallets, bags and other fabrics. The inner diameter of these copper eyelets is approx. 1/2 inch, outer diameter is 5/6 inch, height is 1/5 inch. Specifications: Material: Copper Color: Silver Inner Diameter: 1.2 cm / 0.47 inch Outer Diameter: 2.1 cm / 0.83 inch Quantity: 120 pieces Note: Please do not punch holes in thick materials.