FirstTry Metal Eyelet for Grommet Hole Rivets (100 Piece) Sets Round Eyelets Grommets New Material: Copper Metal, Approx. 0.39 inch / 9-10 mm diameter. Perfect for crafts, costume design, kids clothing, boutique accessories, costume decorating etc… Superior quality durable material, Lightweight, practical, versatile, simple operation, easy to carry. You can easily use it at home, no need for any tool or machinery to install it on your curtain. Wide Application - These leather rivets are useful accessories that can be applied for DIY leather crafts, repairing and decorating wristbands, hats, jeans, windbreakers, belts, shoes, sandals, down jackets, bags and so on. Package Contents: Grommet Eyelet Hole Rivets | Material: Metal | Color: Gold, Silver, Antique Brass, and Gunmetal. | Quantity: 100 pieces | Inside Diameter: 1/8" (3 mm) - Flange Diameter 6 mm - Neck Length 3.5 mm | Easy to Install.