【High Cost Performance】The hex flat head screw nut kit includes 300 hex countersunk head screws and 180 hex nuts. The sizes are M2, M2.5, and M3 respectively, which can meet the different needs of consumers and is very practical. 【Classified Packaging】The hex countersunk screw kit comes with a storage box, which is convenient for you to store and carry, and the classified packaging is convenient for use. 【High Quality】The carbon steel hex countersunk screws are designed with countersunk heads to align these screws with the mounting surface, which is beautiful and scratch-resistant. 【Sturdy】The hex flat head screws are professionally designed, fine workmanship, firm connection, not easy to fall off. 【Long Service Life】The hex flat head screws are made of high-quality carbon steel materials with high hardness and durability.