1. Selected Material: The sharp file is crafted from T12 carbon tool steel, offering hardness, exceptional durability, and a long service life. It is reliable and delivers the sharpest, strongest, and most durable performance. Ideal for shaping, sharpening, smoothing, and deburring crafts, soft metals like aluminum, tin, and copper, as well as hardwoods. 2. Unique Design: Featuring a special tooth shape design, the file ensures uniform and smooth cutting, significantly enhancing performance. It provides a good solution for metal and wood filing, deburring, shaping, trimming, and smoothing. 3. Strong Compatibility: This sharpening file works well on all metal materials, including steel, copper, aluminum, and more, showing versatility. Suitable for DIY enthusiasts, professional mechanics, woodworkers, and maintenance personnel. 4. Long Service Life: With an ergonomic handle design, the file ensures a comfortable grip, preventing hand injuries and fatigue while improving efficiency. Good for fixing molds/tools, deburring metal, and working with soft metals, tin, aluminum, iron, copper, plastic, and hardwood for molding, sharpening, grinding, and finishing.