Begino 100pcs Chicago Screw M4x3mm Slotted Binding Screws for Rivet Book Binding,Black

About this item Material: copper plated to form a stable oxide film on the surface, anti corrosion, anti rust , the beautiful black noble and generous. Perfect Size: 4x3mm, diameter 4mm (0.16in), length 3mm (0.12in), Head 9.5mm (3/8″) Easy to Use: Elaborately dual head screw, can easily bind or remove with a simple standard screw driver. Widely Application: Suitable for all kinds of leather craft, such as belt, bag, shoes, cloth, leather bracelet. Package Include:50×Chicago Screws