Specification: 100% Brand new and high quality Material: Chrome Vanadium Steel Color: Black Quantity: 7pcs/Set Diameter: 0.7mm, 0.9mm, 1.3mm, 1.5mm, 2mm, 2.5mm, 3mm Conversion: 1mm=0.039 inch, 1 inch=25.4mm   Features: Hard and durable. Blackening the surface treatment, with high strength, high toughness, wear resistance. Good oxidation resistance. Suitable for bicycles, motorcycles, automobiles, almost all types of electrical home appliances maintenance, etc.   Notice: 1.Please allow 1-3mm error due to manual measurement,Please make sure you do not mind before you bid. 2.The colors may be a little difference for the different monitors displays, please understand.   Package included： 7pcs/set Micro Hex Wrench