These washers are zinc - coated to resist corrosion. You'll find a mix of flat and spring washers in sizes ranging from M5 to M10. They come in a convenient storage case with separate compartments. Features include excellent corrosion resistance, a sturdy build, and a diverse selection of flat and spring washers in M5 - M10 sizes. There's a 1 - year manufacturer warranty, but customers need to register the product on the manufacturer's website.

Using these washers is easy. First, pick the right size washer (M5 to M10) according to your needs. If you're using a flat washer, place it between the nut and the surface to distribute pressure evenly. For spring washers, use them to prevent nuts from loosening due to vibrations. When installing, make sure the washer fits properly. As for maintenance, keep them in the provided storage case to prevent them from getting lost or damaged. Since they're zinc - coated, they have good corrosion resistance, but try to keep them dry to extend their lifespan. Remember to register the product on the manufacturer's website to get the 1 - year warranty.