These are in small handy packs of 10. Our High Quality Brass Binding Screws are suitable for binding documents & making stylish swatches. They can be easily be opened to change a swatch. There is also the option to use extension posts to give them extra capacity.THE SIZE OF THE BINDING SCREW IS THE CAPACITY/LENGTH OF SHANKPLEASE NOTE:- When buying 5+ packs, it can be cheaper to get the 1, 000 trade packs.