Living House Nine-Key Folding Hex-Key Wrench Set Metric (1 Set) Handy set that fits in your pocket or tool box easily to help eliminate the lost-key problem Made from chrome vanadium steel Hex-key ends are square-cut for a secure full-depth fit and maximum contact with hex socket to prevent slippage and socket stripping Eight-key set sizes:1.5mm; 2mm; 2.5mm; 3mm; 4mm; 5mm; 6mm; 8mm Handle Length: 11cm Weight: 201g/0.44lb