Including 880pcs in 4 sizes to meet your different needs, this fine quality stainless steel screw kit is rustproof and durable enough for a long service life. It is applicable to all kinds assembly, maintenance and repair of precision machinery, electronic products and household appliances, ideal for all kinds of workers and repairmen. Features: - Reliable Quality: Made of 304 stainless steel, this screw combined kit features high hardness, rust-proof and wear-resistant for long time using. - 880Pcs Set: Screw nuts, washers and countersunk head hexagonal 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 assembly, maintenance and repair of precision machinery, instruments, electronic products, communication products, locks, household appliances, lighting, furniture and toys, ideal for all