Meets your requirements: Robust and precisely fitting bits for general screw connections in trade or industry. Saves time: Simple and quick recognition of the profile size thanks to high-contrast laser marking. Attention: Safety profile - only sold to authorized customers. Authorization must be proven in writing. Drive: DIN 3126, ISO 1173, Form C 6.3. Application: For all types of screw connections in trade and industry. Material: High-quality chrome-vanadium steel, fully hardened. DIN 3126, ISO 1173, Form C6.3.