This handy metric hex key set features an extra-long arm to allow easy access to fasteners in hard to reach places. Manufactured from chrome vanadium steel that is hardened and tempered for strength and longevity. To help prevent corrosion, this key set has a polished chrome finish which is also powder-coated with a bright colour. Each colour signifies a different key size for easy identification. All tips have chamfered edges to eliminate burrs. Supplied in a fold-out easy-release storage holder to keep the key set organised and ready to use.