Features: 

· Durable Material: Made from high-quality chrome-molybdenum steel, providing superior toughness and hardness.

· High Torque Resistance: Strong performance under high torque; resistant to damage, breakage, and deformation.

· Heat-Treated Strength: Overall high-temperature quenching ensures long-lasting durability and precision.

· Rust Protection: Precisely forged surface with black phosphate coating prevents rust and corrosion.

· Enhanced Grip: Hex drive with rounded internal corners improves locking force and reduces slipping.

· Smooth Operation: Concave chamfer and burr-free finishing ensure safe and smooth use.