Grommet kit: Includes 100 piece eyelet grommet kit (with 100 grommets and washer, individually packed in a PE bag), punch tool and set tool, all in a mess-free plastic box. Copper Grommets: Made of quality cupronickel and electroplated on the surface, with very high corrosion resistance and shiny appearance, easy to rust. Easy to install: Complete grommet punch kit makes the easier installation. First use the punch tool to punch a hole in the tarpaulin, then take the grommet kit, then use the attached tool to fix the grommet kit tightly. Wide range of uses: The grommet kit is suitable for canvas, tarps, tents, curtains, backpacks, leather crafts, repair and decoration. Size: The inner diameter of these copper eyelets is approx. 1\/2 inch, outer diameter is 5\/6 inch, height is 1\/5 inch, great accessories for various craft projects. Features: 100 metal grommets, one black punch, placed in a transparent 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: 1.4cm Outer Diameter: 2.3 cm Quantity: 100 pieces Package includes: 100 sets of silver grommets 1 x punch 1 x base 1 x installation rod 1 x storage box Note: Please do not drill holes in thick materials.