Material: Made of durable metal, they are sturdy and resistant to corrosion and rust. Grommet installation tool for reinforcing holes and preventing tearing. Practical: These durable grommets are easy to use, perfect for canvas, tarpaulins, tents, awnings, belts, clothing, purses, bags and other items. Easy Storage: All grommets and tools are contained in a transparent storage box. Makes it easy to find the corresponding components. Grommet Size: Hole inner diameter: 12mm, outer diameter: 21mm, height: 6mm. Features: First punch a hole on leather, leather straps or clothing with the punch tool, then use the hammer to set the grommets in place. This is a set of practical tools for adding embellishments to your crafts. Good quality. 100pcs silver grommets and 3pcs installation tools, meet your different needs. The eyelets are made of durable and strong copper. Easy to use: You can easily use the eyelet kit to repair yourself. Useful accessories for leather, canvas, tarpaulins, tents, awnings and other fabric items. To punch a hole on leather, leather straps or clothes, then use the hammer to set the eyelets. Specifications: Product Name: Eyelet Kit. Color: Silver White. Dimensions: 1. Product Dimensions: Hole Inner Diameter: 12mm. Outer Diameter: 20mm. Height: 4.3mm. 2. Box Dimensions: 14.5 x 8.5 x 3.5cm. Package Included: 100pcs Eyelets and 3pcs Fixing Tools. - Note: Please keep them away from children to avoid suffocation. Color: Silver + Black