Material: Made of durable metal, they are sturdy and resistant to corrosion and rust. Grommet installation tool to reinforce holes and prevent tearing. Convenient: These durable eyelets are easy to use, perfect for canvases, tarps, tents, awnings, belts, clothing, purses, bags and other items. Easy storage: All eyelets and tools are contained in a transparent storage box. Makes it easy to find matching components. Grommet Dimensions: Inner hole diameter: 12mm, outer diameter: 21mm, height: 6mm. Features: First punch a hole in leather, leather straps or clothing with the punch tool, then use the hammer to drive the eyelets into place. This is a set of practical tools for adding ornaments to your crafts. Good quality. 100pcs silver grommets and 3pcs installation tools, to 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, tarps, tents, awnings and other fabric items. To punch a hole in leather, leather straps or clothing, then use the hammer to drive the eyelets into place. Features: Product name: Eyelet kit. Colour: silver white. Dimensions: 1. Product dimensions: Inner hole diameter: 12mm. Outside diameter : 20mm. Height : 4.3mm. 2. Box dimensions: 14.5 x 8.5 x 3.5 cm. Contents: Pack of 100 eyelets and 3 fixing tools. - Note: Please keep them away from children to prevent choking. Color: silver + black