9 Piece Colour Coded Hex Key Set, made by Faithfull, is produced with easy metric size identification in mind. Professional quality keys are made from S2 stainless steel for excellent impact resistance. All keys are chamfered to prevent damage to the blade and fitting. The ball end design allows 25 degrees access to deep set screws or difficult to reach places at offset angles. The colour coded blades allow for easy metric size identification. This new Faithfull Set comes with a handy storage caddy so it can be stored safely in both pockets and toolboxes. The Faithfull 9 Piece metric set consists of: Sizes: 1.5mm, 2mm, 2.5mm, 3mm, 4mm, 5mm, 6mm, 8mm and 10mm.