A 9-piece Extra-Long, hex key set containing popular metric sizes. Longer keys allow a greater amount of torque to be applied to the fastener. Each key has a standard hex end on the short side and a ball end on the long side. The ball end enables the key to be used at up to a 30° angle. The keys are manufactured from CR-V (chrome vanadium steel) and black oxide coated for protection.   • Metric Hex Keys: 1.5, 2, 2.5, 3, 4, 5, 6, 8 and 10mm • Length: from 90 to 220mm • Ball end and standard hex end • Longer keys allow greater torque to be applied • CR-V • Black oxide coating for protection • Storage clip