Multiple Sizes: M2.5, M3, M4, M5, M6, M8, 6 common sizes to meet your different needs. 304 Stainless Steel: Selected material, corrosion-resistant, stable and reliable, can be used under high temperature, high pressure or alternating working conditions. Application: Used for electrical connections on household and commercial appliances, automotive and marine. Easy Storage: All washers are placed in a clear transparent box, convenient to sort that you can always easily find the corresponding components. Exterior Design: Serrated lock washers with external teeth, as an ideal replacement for traditional metal-plated washers. Item Descriptions: -Multiple Sizes: M2.5, M3, M4, M5, M6, M8, 6 common sizes to meet to your different needs. -304 Stainless Steel: Selected material, corrosion resistant, stable and reliable, can be used under high temperature, high pressure or alternating working conditions. -Application: Used for electrical connections on household and commercial appliances,