Optimize the performance and safety of your equipment with the manganese steel anti-vibration safety washers. These double-stacked self-locking wedge washers are engineered to provide a secure locking mechanism that resists loosening due to vibrations. Suitable for use in bicycles and machinery, place the washers between the bolt head and the surface to ensure a tight and reliable fit. Features -Color:Silver -Material:Manganese steel -Size:1.70X1.70X0.20cm/0.67X0.67X0.08in Inner diameter:1cm -Secure fastening: designed to fit corresponding sizes of bolts, screws, and other fasteners, ensuring a secure and tight connection that resists loosening -Enhanced reliability: widely used in mechanical, construction, transportation, and infrastructure projects, these washers provide enhanced safety and reliability -Easy to use: easy to install by placing the washer between the fastener and the mating surface, with the wedge locking mechanism activating upon tightening -Innovative mechanism: the double wedge design with interlocking teeth creates tension between bolts and nuts, effectively preventing loosening due to vibrations -Robust build: made from manganese steel, these washers offer exceptional strength and durability, capable of withstanding heavy loads and harsh conditions Package list: 20 x Wedge Locking Washer