Fiber Washer Assortment, 600 Pcs Red Steel Paper Fiber Flat Washer Insulation Washer Assortment Material: Made from high-quality red steel paper, offering good strength and corrosion resistance. Color is red. Good Insulation Performance: The flat washers can distribute load, prevent damage to the surface being fastened, and insulate steel screws. Comes with a compact and transparent plastic storage box. Used on motherboards, circuit boards, and PCBs. Package includes: A total of 600 pieces. There are many different sizes in this set to meet your various needs. Shipping Quantity: 600 pieces Product Color: Red Specifications: 12 sizes (specific specifications are shown in the picture) Happy meeting Note: All data is measured manually, please allow 1-3 cm error. Due to the difference in light and display, there will be some color difference; the actual item received shall prevail.