Including 880 pieces in 4 sizes to meet your different needs, this high quality stainless steel screw kit is rustproof and durable enough for a long service life. It is applicable to all kinds of assembly, maintenance and repair of precision machinery, electronic products and household appliances, ideal for all kinds of workers and repairers. Features: - Reliable Quality: Made of 304 stainless steel, this screw combination kit features high hardness, rust-proof and wear-resistant for a long time of use. - 880Pcs Set: nuts, washers and hex head countersunk screws in different sizes. - 4 Different Sizes: including M2, M3, M4, M5, meeting different needs. - Compact Storage Case: All components can be stored in this case, saving space and convenient to carry. - Wide Application: Applicable to all kinds of assembly, maintenance and repair of precision machinery, of instruments, electronic products, communication products, locks, household appliances, lighting, furniture and toys, ideal for