1、Anti Rust: Screw and nut set, made of high quality stainless steel, with excellent anti rust performance, ensuring long lasting use effect. 2、Non Slip: The cross nut design ensures stability, firm fixation, even force is not easy to slip, very suitable for long term use. 3、Wear Resistant And Durable: Flat spring washer screw and nut set, the thread head is neat and clear, wearable, with high hardness and good toughness. 4、Multi Specification: A total of 360 flat washer spring washer screws and nuts, M5, M4, M3 various specifications, to meet your different needs. 5、Precise Thread: Professional screw and nut set, precise thread can easily pass through various materials such as plastic, wood, soft metal, etc. 360 x Screw Nut Set1 x Storage Box Item Type: Screw Nut SetMaterial: Stainless SteelColor: SilverSpecifications: M5Nust, M5 x 12mm, M5 x 16mm, M5 x 20mm, M5 x 25mmM4Nust, M4 x 12mm, M4 x 16mm, M4 x 20mm, M4 x 25mmM3Nust, M3 x 12mm, M3 x 16mm, M3 x 20mm, M3 x 25mm