You are Buying a brand New And Factory Sealed Qil Lang Tools 9PCS Long Hex Key Wrenches Sets 1.5-10mm Hardened Heat Treated Chrome Steel. High quality, Industrial Grade Professional Tools made in China. COMPLETE METRIC SET contains all common, popular MM Sizes: 1.5, 2, 2.5, 3, 4, 5, 6, 8, 10 Qil Lang Tools hex keys (Hex wrenches) are used to drive internal hexagon socket (Hex head) fasteners Qil Lang Tools tools are made with Alloy Steel that is heat treated, quenched and tempered for optimum strength, torque and ductility for safety and coated with a rust resistant finish IDENTIFY YOUR TOOLS- Metric sizes are color coded in Yellow so you can reach for the correct tool quickly KEEP YOUR KEYS ORGANIZED- A plastic holder firmly holds each key in a sized-marked hole so you always have the size you need at-hand MEETS OR EXCEEDS ALL APPLICABLE STANDARDS- Qil Lang Tools meet or go beyond the standard regulations.