Descriptions:

• Rustproof: A-grade TC4 titanium alloy material, corrosion-resistant, no rust.
• Power: Equivalent to 10.9 grade steel screws. 
• light: Steel  Titanium Aluminum * Under the same specifications, the weight is about half of that of steel screws, close to that of aluminum screws
• Vacuum nitriding & Anodizing: Using "Vacuum nitriding" or "anodizing" coloring process, the color is gorgeous and not easy to change color