You need to punch holes with a punching tool before using the buttonhole and pliers. Please pay attention to the direction of the buttonhole and the pliers, the wrong direction cause damage to the buttonhole. Add the washer to the grommet, which can help make eyelets stronger, not easy to loosen. The bottom of the eyelets is flowering design, it is not a defective effect, please kindly note. 500Pcs Small Eyelets Washers ,This grommet eyelets pliers kit comes with 500pcs Silver metal eyelets washers , which can help make eyelets stronger, not easy to loosen. Portable & Handheld Eyelet Pliers - These manual eyelet pliers with a special design, made of Carbon steel, chrome-plated on the , the handle of hole punch pliers is plastic-impregnated, which is comfortable to grip, easy to use and effortless. it is easy to take to any place. The eyelet pliers can apply the eyelets into a variety of materials such as fabric, leather, soft and thin plastic, acrylic, canvas, suede, and more Colour:As Shown Material:Metal Size:10mm Package Contents: 1 * handhold eyelet punch pliers 500 * small metal eyelets Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.