DescriptionProfessional manufacturing, do not need to be replaced frequently, it is very safe to use. It is a universal replacement flat gasket fastener, which is suitable for most stroke outboard engines. Safe and reliable, and an indispensable accessory for fastening.Features-Color: Black. -Material: Nylon. -Size: About 13.00X6.60X2.30cm/5.11X2.59X0.90in. -Specification: M2-M10. - Nylon material features strength and offers good corrosion resistance in bad environment. - These flat washers provide a bearing surface for fastener load distribution and resistance to abrasion. - Can be used to reduce friction between the fasteners, prevent leakage and isolates, prevent loosening or dispersion pressure.- It contains different sizes of the most commonly used nylon washers, and sufficient numbers can meet your daily use. - Widely used in automotive or marine connections on household and commercial appliances.