High-Strength Alloy Steel : Our screws and nuts boast 19-grade high strength, making them ideal for high-stress environments where reliability is crucial. Oxidation Treatment : Protected against corrosion and rust through advanced oxidation treatment, ensuring your fasteners remain in top condition even under harsh conditions. Easy to Carry : A practical plastic box accompanies the kit, keeping all components organized and protected, whether you're working in the garage or on-site. Wide Application : Perfect for automotive, machine maintenance, and household projects, this kit is your go-to solution for securing components securely and efficiently. Complete Specifications : From small to large, this assortment covers a wide range of sizes, ensuring that you have the right tool for every fastening task at hand. Introducing the ultimate fastening companion for all your needs. Our High-Strength Alloy Steel Screws and Hex Nuts Kit offers unparalleled versatility and durability. Whether you're a professional mechanic or a home improvement enthusiast, this kit has everything you need for robust and reliable fastening. 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.