Feature:1. Punching Tool: Special tool processing at the edge, not easy to deform, not easy to become blunt, durable.2. Applicability: Suitable for providing economical solutions for canvas, tarps, tents and pool coverings, for shoes/laces, clothing, bags, crafts, etc.3. Easy To Use: The grommet eyelet is easily held in place with the hole saw and matching mandrel; the mandrel surface has a unique pattern and the non slip punch provides a firmer grip.4. Stainless Steel Material: Made of high quality hardened stainless steel material, the structure is firm, and it is not easy to rust and deform.5. Easy to Install: Professional installation tools, you can complete the installation quickly and easily.Specification:Item Type: Grommet Tool KitMaterial: Stainless SteelSpecifications: 100 Sets Of Eyelets (Including Eyelets And Spacers)Product Size: Approx.Eyelet Button Size: Outer Diameter 20mm / 0.8in, Inner Diameter 12mm / 0.47inGasket Size: Outer Diameter 200mm / 7.9in, Inner Diameter 13mm / 0.51inPunch Tool Size: Length 9.5cm / 3.7inCorn Punch Size: Length 10cm / 3.9inAnti Skid Punch Size: Length 2cm / 0.78in, Diameter 2.1cm / 0.8in.Package List:100 x Eyelet Button100 x Gasket1 x Punch Tool1 x Corn Punch1 x Anti Skid Punch