Convenient to use: These screw posts are easy for you to and remove, you can use a drill to punch a 5 mm diameter hole, then install the 2 parts from 2 sidesWidely Application: Perfect for leather handicrafts decoration, bookbinding, document, book, album, Material: stainless steelPackaging Quantity: 120Pcs (60 Pieces of Screws and 60 Pieces of Tops)Size: M5 x 5 / 10 / 15 / 25 / 35 / 45mm,Tops Thread Length: 3mm, 5mm and 6mmcolor:silverPackage Contents:15 * M5 * 5mm Binding Screws15 * M5 * 10mm Binding Screws10 * M5 * 15mm Binding Screws10 * M5 * 25mm Binding Screws5 * M5 * 35mm Binding Screws5 * M5 * 45mm Binding Screws15 * 3mm Tops25 * 5mm Tops20 * 6mm TopsOnly the above package content, other products are not included.Note: Light 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.