Features: This kit includes 300pcs hex countersunk screws and 180pcs hex nuts in size of M2, M2.5, M3. Made of carbon steel material, high hardness and durable. Countersunk head design makes these screws align with the mounting surface, beautiful and anti-scratch. Firm connection, not easy to fall off. Come with a storage case, convenient to store and carry with you. Specification: Material: Carbon steel Surface Treatment: Quenching + Yellow zinc plating Type: Hexagonal head Quantity: 480pcs Screw Size: M2*6, M2*8, M2*10, M2*12, M2.5*6, M2.5*8, M2.5*10, M2.5*12, M3*6, M3*8, M3*10, M3*12 (25pcs per size) Nut Size: M2, M2.5, M3 (60pcs per size) Package Weight: Approx. 198g   Package list: 300 * Hex Countersunk Screws 180 * Hex Nuts 1 * Plastic Storage Case