Specification: Model: M3CH8;  Screw Drive Type: Hex Socket;  Screw Head Type: Flat Head (Countersunk Head), Button Head;  Screw Material: Carbon Steel;  Washer Material: 304 Stainless Steel;  Color: Black, Sliver;  Box Size (L*W*D): 13x6.5x2.2cm;     Features: - 60pcs M3 hex socket flat head screws, 60pcs M3 hex socket button head screws, 30pcs M3 flat washers, 30pcs M4 flat washers.  - Black appearance, dark color will fit well in different occasions.  - With different screw heads as well as screw lengths, completely diversified assortment, meet your different application, you can choose what you want everytime.  - Made of carbon steel, extremely high hardness, makes them good at resisting abrasion and retaining shape. They can withstand significant force before deforming.  - Comes with a delicate plastic organizer box for storage, also suitable for collecting your small accessories.     Package Included: Type Screw Head Length Quantity;  M3 Screw Flat Head 6mm 15;  M3 Screw Flat Head 8mm 15;  M3 Screw Flat Head 10mm 15;  M3 Screw Flat Head 12mm 15;  M3 Screw Button Head 6mm 15;  M3 Screw Button Head 8mm 15;  M3 Screw Button Head 10mm 15;  M3 Screw Button Head 12mm 15;  M3 Washer - - 30;  M4 Washer - - 30;  Total Quantity: 180.