Allen Key Hex Key Set of 9 Colour Coded Metric | XMS24HEXKEYS Colour-coded S2 stainless steel Twist and lock action Ball end design Faithfull 1.5 - 10mm Allen Key Hex Key Set of 9 Colour Coded Metric | XMS24HEXKEYS This professional quality hex key set is manufactured from S2 stainless steel which makes it highly resistant to impact and corrosion. The keys are colour-coded to allow for easy size identification and are held together by a plastic clip with a twist and lock action to secure the keys into their slots. The ball end design of the keys enables access to deep-set screws or hard-to-reach places at offset angles. Set includes:1.5mm, 2mm, 2.5mm, 3mm, 4mm, 5mm, 6mm, 8mm and 10mm and plastic clip case