Features: 1.Provide economical solutions for canvas, tarps, tents and pool coverings 2.This grommet tool kit is suitable for shoes/shoelaces, clothing, crafts, etc. 3.Easily fix the metal buttonhole in place with a hole cutter and matching mandrel 4.The mandrel surface has a unique design, non-slip and provide a safer grip 5.Come with plastic storage box, suitable for storing small grommet tools, easy to take when sewing specification:Item Type: Grommet Tool Kit : 1 Box Main Material: Iron (composed of complex materials) How to Use: 1. Prepare products and tools 2. Use a punching rod to punch the fabric 3. Pass the eyelet through the hole 4. Fasten the gasket on the other side 5. Put the product on the mounting base 6. Use the installation stick to tap and install 7. Installation is complete Size: Approx. 12mm / 0.5in PackageList: 12 x Golden Grommet 12 x Silver Grommet 12 x Black Grommet 12 x Bronze Grommet 12 x Golden Gasket 12 x Silver Gasket 12 x Black Gasket 12 x Bronze Gasket 1 x Punch Rod 1 x Mounting Rod 1 x Installation Base 1 x Storage Box