Specifications:Made of carbon steel, they are durable, strong, rust resistant and long lasting.A variety of sizes of screws with matching nuts and gaskets can meet the needs of different people.The hexagonal head wrench is convenient for tightening, and can be reliably connected to the frame composed of aluminum profiles. Type: Screws Nuts KitMaterial: Carbon SteelQuantity: 1200Pcs/SetType: Hexagon Socket Head (Metric)Thread: M2 x 0.4, M3 x 0.5, M4 x 0.7Features: Durable, Rust Resistance, Easy to UseBox Size: 19.5cm x 13cm x 3.6cm/7.68" x 5.12" x 1.42" (Approx.) Notes:The quantity is about 1200pcs, due to manual calculation, the quantity might has 1-8pcs more or less, hope you can understand, thank you.Due to the light and screen setting difference, the items color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement. Package Includes:20 x M2 x 6 Screws20 x M2 x 8 Screws20 x M2 x 10 Screws20 x M2 x 12 Screws20 x M2 x 16 Screws20 x M2 x 20 Screws20 x M3 x 6 Screws20 x M3 x 10 Screws20 x M3 x 12 Screws20 x M3 x 16 Screws20 x M3 x 20 Screws20 x M3 x 30 Screws20 x M4 x 6 Screws20 x M4 x 10 Screws20 x M4 x 12 Screws20 x M5 x 16 Screws20 x M5 x 20 Screws20 x M5 x 30 Screws160 x M2 Gaskets160 x M3 Gaskets160 x M4 Gaskets120 x M2 Nuts120 x M3 Nuts120 x M4 Nuts3 x Wrenches