Features: Brand new and high quality Stainless steel material, which is resistant to corrosion, not easy to break, strong, and have strength and durability. Flat washers can effectively disperses the pressure generated by the head of the fastener, quickly disperses force on the surfaces of the screw and nut, and protect the part from damage by increasing contact area, prevent leakage, isolate, prevent loosening, etc. Stainless steel washers is store in storage box with compartments. Metal washers is store separately, well organized, easy to carry and find. Convenient to use. Widely used in electrical connection, household appliances, commercial appliances, furniture maintenance, mechanical equipment, automobile maintenance, electrical connection, factory etc. You will receive 684pcs, 9 size(2mm/2.5mm/3mm/4mm/5mm/6mm/8mm/10mm/12mm) and sufficient quantity, enough for daily use in different occasion. Specifications: Material:Stainless Steel Case:Approx.128x66mm/5.03x2.6inch Package Includes: 648Pcs Flat Washers 22Pcs 10mm Flat Washers 12Pcs 12mm Flat Washers 70Pcs 5mm Flat Washers 50Pcs 6mm Flat Washers 50Pcs 8mm Flat Washers 120Pcs 2mm Flat Washers 120Pcs 2.5mm Flat Washers 120Pcs 3mm Flat Washers 120Pcs 4mm Flat Washers note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.