General description FLITI Starlock Washer Set includes 680 pieces in 7 common sizes: M3, M4, M5, M6, M8, M10, and M12. This set is designed to meet various daily needs, providing a reliable solution for securing components in different applications. Technical specifications Material: 65Mn metal steel Sizes included: M3, M4, M5, M6, M8, M10, M12 Quantity: 680 pieces Locking Effect The locking washer utilizes spring force to secure the hard washer to the thread of the hard bolt, enhancing friction and resistance to rotation. Wide Application This washer set is suitable for a variety of applications, including: Mechanical equipment Electronic equipment Household appliances Craftsmanship and decoration Other information Each size is organized in a classified storage box for easy access and storage.