1Made of A2 stainless steel material, the A2 stainless steel material provides strength and offers good corrosion resistance in many environments 2Ideal for use in confined areas where the head needs to be flush or below the surface 3Fixing component, industrial and construction fasteners 4Eight common sizes and three optional types for general purpose use 5Used widely in the home and office appliance, communication equipments, ship assembly and other machinery industryDescription: These screws and nuts are made of A2 stainless steel, which is resistant to rust and corrosion.There are many length in one set which can becommonly used in home and office appliance, machinery, furniture, repair and DIY inventions. Features: Made of A2 stainless steel material, the A2 stainless steel material provides strength and offers good corrosion resistance in many environments. Ideal for use in confined areas where the head needs to be flush or below the surface. Fixing component, industrial and construction fasteners. Eight common sizes and three optional types for general purpose use. Used widely in the home and office appliance, communication equipments, ship assembly and other machinery industry. Specifications: Material: A2 stainless steel Type(optional): A: Cap head B: Button head C: Flat head Size and Quantity: Screws: M2.5 x 4 > 25pcsM2.5 x 5 25pcsM2.5 x 6 25pcsM2.5 x 8 > 25pcsM2.5 x 10 25pcsM2.5 x 12 25pcsM2.5 x 16 25pcsM2.5 x 20 25pcs Hex Nuts 100pcs Package Includes:200pcs x Screws 100pcs x Nuts Note: