DescriptionThose chicago screws are made of copper plating carbon metal, which is rust resistant and can use repeatedly. Widely applicable for leather handicrafts decoration, decorating document, book, photo album, bookbinding, scrap booking and other diy crafts.Feature- Color: As shown - Material: copper plating metal - Size: 0.6 x 0.5 x 0.6cm - Chicago screws are made of copper plating carbon metal, which effectively enhances the capability of corrosion resistance and can use repeatedly - Screw post size: M5*6. - Easily applied with standard screwdriver. Easy to bind and remove. - Widely applicable for leather handicrafts decoration, decorating document, book, photo album, bookbinding, scrap booking and other diy crafts