Specifications: Material: metal Grommet outside Diameter: 1/2 inch Grommet Inside Diameter: 6mm, nearly 1/4 inch, but slightly less than 1/4 inch Color: as pictures shown Material: The eyelet pliers are made of Carbon steel, chrome-plated on the surface, the handle of eyelet pliers is plastic-impregnated, which is comfortable to grip, easy to use and effortless. Package Content: - 400pcs gold and silver Metal Eyelets - 400pcs Washers - 1x Portable Handheld Manual Grommet Pliers Features: - Carbon steel construction and special anti-friction plastic material, durable and easy holding - Easy to use and portable, can be put in the kit to take to any place - With the correct opening angle, you can press it by only one hand - Manual eyelet puncher in light weight is very easy to take and convenient to use because of its redirecting transmission Warm Tips:- The metal grommets are light duty, more for decoration, cant hold heavy pulling. This grommets kit is ideal for 1-3 mm thick materials like leather, tarps, shoes, elastic bands, paper cards, and hanging crafts. Not suitable for fabrics or cloth. - Please choose the right size that you need according to the product dimension description(Grommet Outside Diameter: 1/2 inch; Grommet Inside Diameter: 6mm, nearly 1/4 inch, but slightly less than 1/4 inch). - You need to punch holes with a punching tool before using the buttonhole and pliers. You cannot skip the hole punch. The grommets aren't heavy duty enough to be the hole punch and the grommet. - Please pay attention to the direction of the buttonhole and the pliers, the wrong direction will cause damage to the buttonhole and make the pliers bend. Do not press too hard when using the pliers, the handle will bend. The grommet kit is light duty, not for heavy duty - Add the washer to the grommet, which can help make eyelets stronger, and not easy to loosen. - The bottom of the eyelets is a flowering design, it is not a defective effect, please kindly note.