Ideal set of Allen keys used to drive torx security screws and bolts. The set comes in a practical and handy plastic case for hanging; easy to quickly locate the appropriate key size. The keys have a special end with the opening adapted for use with torx security or tamperproof screws.
Keys forged from high quality CrV 6150 chromium vanadium steel for high resistance and resilience. Hex keys possess a working hardness of 52-55 HRC.