Features Made of A2 stainless steel material, the A2 stainless steel material provides strength and offers good corrosion resistance in many environments. Widely used in household and office appliances, communication equipment, ship assembly and other machinery industry. Ideal for use in confined areas where the head must be flush or below the surface. Eight common sizes and three optional types for general purpose. Fasteners, industrial and construction fasteners. Description: These bolts and nuts are made of A2 stainless steel, which is resistant to rust and corrosion. There are many lengths in one set, which can be commonly used in household and office equipment, machinery, furniture, repair and DIY inventions. Specifications: Material: stainless steel A2 Type (optional): A: cap head B: button head C: flat head Size and quantity: screws: M2.5 x 4 25 pieces M2.5x5 25pcs M2.5x6 25pcs M2.5x8 25pcs M2.5x10 25pcs M2.5x12 25pcs M2.5*16 25pcs M2.5 x 20 25 pieces hex nuts 100 pieces. Package includes: 200 x screws. 100 x nuts. Note: 1. Please allow 1-3 mm error due to manual measurement. Thank you for your understanding. 2. Monitors are calibrated differently, the colour of the item shown in the photos may differ slightly from the actual object. Please take the real one as standard. Package List