We believe a tool should be an investment, not a disposable item. That's why every POZOHO hex key is forged from premium Chrome-Vanadium (Cr-V) alloy steel. This material is renowned for its superior strength-to-weight ratio, excellent toughness, and exceptional resistance to wear and deformation under high torque. Each key is then finished with a protective anti-corrosion coating, making it rust-resistant and ready to perform in garages, workshops, or humid environments for years to come