Suitable for: It can be well used in car and motorcycle maintenance work. If you need a general purpose lock washer, take the opportunity to hook them up. These washers can keep what you build or fix well and won't end up with a scratched surface.High Quality Stainless Steel: High quality stainless steel makes the elasticity of the washers ideal, and the texture has just the right amount of rigidity while being sturdy.Total of 70pcs washers, practical and economical, fully meet your needs.High performance: used to prevent the loosening of nuts, bolts and screws. The lock washers are separated and bent at specific points to make them spiral. In many materials, these lock washers are pressed down, adding extra pressure to the nut or bolt and the material.Spiral with Slot: They look like washers that have been split in a certain way and at a certain angle.Producing elastic force by its spiral shape, the opening tip can prevent the nut and bolt from loosening.You don't need to keep them tight at times.neat opening: it's a spring washer with a clean and neat opening, really prevents the nut from backing out Once you secure it under a bolt, it allows that bolt to stay, the two opening tips can be aligned with each other without a problem, no burrs to block the opening.