1. Manufactured from 304 stainless steel, it offers excellent oxidation and corrosion resistance, is rust-proof and durable, and is suitable for various harsh indoor and outdoor environments. 2. The large-diameter square design provides a greater contact surface area, which more effectively distributes load pressure and prevents fasteners from sinking into soft materials or covering larger holes. 3. Available in a variety of inner diameters including M3, M4, M5, M6, M8, M10, and M14 combined with different side lengths (10 mm-40 mm) and thicknesses (1 mm-3 mm), totaling 14 specifications to meet diverse assembly needs 4. Packaged in a transparent, multi-compartment plastic storage box with a detailed specification and quantity chart on the inside of the lid, facilitating quick identification, precise retrieval, and organized storage 5. Widely used in woodworking and construction, machinery and equipment, automotive repair, plumbing installation, and metal structure connections 6. Material: 304 stainless steel
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