Metric Hex Keys Short Arm 6150 Alloy Steel, M0.9 M1.5 M2 M2.5 M3 M4 M5 M6 M8 M10

Material: Black Alloy Steel (Heat treated 6150 alloy) for maximum strength and hardness. Durability: Built to last with a minimum tensile strength of 1200 MPa, these hex keys withstand high torque and demanding conditions.