Intended Use The metal grommets are light duty, more for decoration, cant hold heavy pulling. This grommets kit is intended for rougher applications such as leathers, tarps, shoes, elastic band, hanging crafts, tent and canvas, not for more refined applications such as front lace shirts, Tshirt, high gloves, furniture covers, nor for materials that is too thin or too thick, recommend thickness 1mm to 3mm as the best Precautions for Use The grommets outside diameter is 12 inch and the inside diameter is 6mm nearly 14 inch. Please choose the right size that you need according to the product dimension description. Please pay attention to the direction of the buttonhole and the pliers, the wrong direction will cause damage to the buttonhole and make pliers handle bend. The bottom of the eyelets is flowering design, it is not a defective effect Portable Lightweight Handheld Eyelet Pliers These manual eyelet pliers with a special lightweight design, made of Carbon steel, chromeplated on the surface, the handle of hole punch pliers is plasticimpregnated, which is comfortable to grip, easy to use and effortless. BUT please dont squeeze too hard the handle will bend. The grommet kit is light duty, not for heavy duty Practical Grommet Eyelet Plier Set 1203pcs grommet tool kit included 600pcs 14 inch 6mminside hole size small metal eyelets in silver and gold, 600pcs matching metal washers in silver and gold, 1* handhold eyelet punch pliers, 1 * hole punch, 1 * user manual. The matching washers will help your eyelets to be stronger and less likely to come loose. You can easily use the eyelets kit to DIY by yourself; please confirm the size before purchasing Comes with Use Manual This eyelets pliers kit comes with a detailed graphic version user manual that can help your DIY works more easily and efficiently. Please pay attention to the direction of the buttonhole and the pliers, the wrong direction will cause damage to the buttonhole 400Pcs Small Eyelets Washers This grommet eyelets pliers kit comes with 400pcs metal eyelets washers in gold and silver, which can help make eyelets stronger, not easy to loosen. There is also a detailed manual to help you better use the eyelets pliers set