These metric L-wrench hex keys are constructed from fully hardened carbon steel in accordance with DIN 911. A quality ductile key with precision cut ends and accurate AF dimensional to ensure maximum socket contact. Ball end allows up to 30 work offset. Long arm end is ball drive and short arm end plain. Finished with a black oxide for further resistance to wear and tear. Features and Benefits Black oxidised finish to bolster resistance to corrosion and weathering Manufactured from fully hardened carbon steel making for a robust product Available in a variety of sizes to ensure you find the product best suited to your needs Dual purpose with one plain end and the other with a ball drive Typical Applications Furniture Construction Bicycle Repairs Standards Conforms to DIN 911