Check the listing for details. 100pcs Internal Tooth Star Locking Washer - [5mmID x 12mmmmOD], Metal. Condition: New. Listed at 10.20 USD. APPLICATION-Internal tooth washers are widely used in various industries such as industrial shock absorption manufacturing, machinery, and other applications. These lock washers provide a secure grip, spring force, enhanced friction, and resistance.ABOUT THIS PRODUCTS-Crafted from Metal, these rapid speed locking washers have a sleek and polished surface, ensuring exceptional resistance against oxidation and wear. Designed for use in the toughest conditions, including extreme temperatures and high humidity, these washers ensure long-lasting performance and reliability.-These Locking Washers offer excellent resistance to corrosion and are simple to install. It provides a strong grip and spring force, ensuring a secure and long-lasting installation.