Check the listing for details. 100Set Grommets Eyelets Kit 4.5mm Brass Eyelets with Washers, Silver. Condition: New. Listed at 10.97 USD. 1. The size of the eyelet button is 9*4.5*5mm (Outer Diameter*Inner Diameter*Height)2. Leather grommets are made of brass, and the surface is electroplated to enhance the metal's corrosion resistance and anti-rust capabilities, increase its hardness, and prevent wear and tear.3. Eyelets are a common clothing accessory, mainly used in various textiles such as clothing, shoes and hats, bags, curtains, etc. to achieve functions such as fixation, reinforcement, and decoration.4. Widely used to prevent tearing or abrasion on various perforated materials, such as leather, jeans, plastic, canvas, cardstock, tarps, tents, awnings, etc.5. Installation of eyelets and grommets is very simple, just drill a hole in the leather fabric where you want to install the eyelet grommets, then insert the eyelets into the holes and secure with studs.