• The set contains 600 pieces, including 12 types of small screws and nuts, among them M1, M1.2, M1.4, M1.6 screws and M1.2 and M1.4 nuts. • Perfect for repairing watches, glasses, electronic devices, mobile phones, and remote controls that require small screws. • The screws are made of high-quality stainless steel, offering great hardness, sharp and precise threads, and resistance to deformation and slipping during use. • The set comes in a transparent storage box with 12 compartments, allowing for efficient organization and easy access to each type of screw and nut.