1. [Premium 304 Stainless Steel Construction]Experience unmatched durability and corrosion resistance with 's Fender Washers. Manufactured from high-quality 304 stainless steel, these washers are designed to withstand the harshest environments, from high humidity to extreme temperatures, ensuring longevity and reliability for all your applications 2. [Versatile SAE and Metric Sizes] This comprehensive assortment set includes a versatile mix of 520 washers spanning 23 sizes, both SAE and Metric (M3, M4, M5, M6, M8, M10, M12, 6#, 8#, 10#, 1/4, 5/16, 3/8, 1/2). Whether you're working on automotive projects, home repairs, or industrial tasks, you'll find the perfect size to meet your needs 3. [Optimal Load Distribution] Designed to provide even load distribution, Fender Washers ensure stability under high-stress conditions. These flat washers will protect surfaces from damage, reduce wear and tear on bolts and screws, and help prevent material deformation 4. [Efficient Storage Solution] Organize your hardware easily with the included compartmentalized storage box. Each washer is meticulously sorted and the box comes with clearly labeled compartments, making identification and access a breeze. The snap-lock design ensures the washers stay in place and are ready whenever you need them Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store