Features Made of carbon steel, high hardness and durable. Countersunk design allows these screws to align with the mounting surface, beautiful and anti-scratch. Come with a storage case, convenient to store and carry with you. This kit includes 300pcs hex countersunk screws and 180pcs M2, M2.5, M3 size hex nuts. Firm connection, not easy to fall off. Specification: Material: carbon steel Surface treatment: quenching + yellow zinc plating Type: Hex Head Quantity: 480 pieces 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 (25 pieces per size) Nut size: M2, M2.5, M3 (60 pieces per size) Package weight: approx. 198 g Features: Made of carbon steel, high hardness and durable.Firm connection, not easy to fall off.The countersunk head design allows these screws to align with the mounting surface, beautiful and scratchproof. This kit includes 300 hex countersunk screws and 180 hex nuts size M2, M2.5, M3.Come with a storage case, convenient to store and carry with you. Package list: 300 x Hex Countersunk Head Screw 180 x Hex Nuts 1 x Plastic Storage Case Package List