9pc Hex Key Wrench Set is made of Carbon Steel or Cr-V Steel Size: 1.5mm,2mm,2.5mm,3mm,4mm,5mm,6mm,8mm,10mm 9pc Hex Key Wrench SetMaterial: Carbon Steel or Cr-V SteelSize Contains:1.5mm,2mm,2.5mm,3mm,4mm,5mm,6mm,8mm,10mmPacked with plastic frame 9pc Hex Key Wrench Set