Size: H4; Overall Length: 25mm (1 inch). These hex bits are specially designed for easy screwing into wood, metal, and other materials. They allow for precise tightening without damaging either the screw or the bit. Material: Made from heat-treated S2 steel, these bits offer exceptional strength and hardness (HRC 60-62). Highly durable and resistant to deformation, they feature a pearlescent chrome finish that enhances grip and corrosion resistance. Features: Thanks to their powerful magnet, these hex bits hold screws firmly in place, whether placed vertically or at an angle. This feature facilitates screw handling and allows for more convenient work, especially in tight spaces. Applications: These bits are suitable for both tightening and removing screws. They are ideal for furniture assembly, machine installation, car repairs, DIY projects, custom furniture manufacturing, and woodworking. They are compatible with most manual screwdrivers, electric screwdrivers, and drills. Note: When tightening screws, avoid applying excessive force to prevent damage or the bit from slipping. Store the screwdriver bits in a dry place to prevent rust and maintain optimal performance.