Feature: 1. The flat washer is used to reduce friction, prevent leakage, isolate, prevent loosening or disperse pressure. 2. Provides stable protection for the surface of the connected parts. 3. These gaskets are made of nylon material, resistant to aging and corrosion, good toughness, long service life. 4. This kit come with washers in 7 sizes to meet your different needs. 5. The included plastic box has multiple compartments that keep these washers sorted by size and allow you to easily find the proper one. Specification: Features: The flat washer is used to reduce friction, prevent leakage, isolate, prevent loosening or disperse pressure. Provides stable protection for the surface of the connected parts. These gaskets are made of nylon material, resistant to aging and corrosion, good toughness, long service life. This kit come with washers in 7 sizes to meet your different needs. The included plastic box has multiple compartments that keep these washers sorted by size and allow you to easily find the proper one. Specification: Item Type: Washer Material: Nylon Color: White Quantity: 350pcs Package List: 50 x M2 Washer 50 x M2.5 Washer 50 x M3 Washer 50 x M4 Washer 50 x M5 Washer 50 x M6 Washer 50 x M8 Washer 1 x Storage Box